List of Roman-to-modern scheduled monuments in Gwynedd

Gwynedd is a large rural county in North Wales. The northern half includes the high mountains of Snowdonia and the mixed farmland and hills of the Lleyn peninsula, which between them make up the former county of Caernarvonshire. The southern part of Gwynedd is the softer coastal and upland landscapes of the former county of Merionethshire. Gwynedd, the second largest county in Wales, has a total of 497 Scheduled monuments. That is too many to have on a single list article, so for convenience the list is divided into three. The 365 prehistoric sites are in two lists, covering 171 sites in former Merionethshire, and 194 sites in former Caernarvonshire. Below are the 132 sites dating from Roman to modern times, from the whole of Gwynedd. Gwynedd is a unitary authority comprising most of two historic counties. In 1974 it also merged with Anglesey, and the merged county was also called Gwynedd. Since 1996 Anglesey has been a separate county again.

There are 16 Roman scheduled sites on the list, almost all of which relate either to Roman military activity, or local defensive measures. By contrast, the 14 early medieval (Dark Age) monuments are all individual stones, either with carved crosses or other inscriptions or in one case a sundial. The 53 post-Norman medieval sites include sites included in the Castles and Town Walls of King Edward in Gwynedd World Heritage Site. Seven castles, 11 mottes, and seven enclosures are scheduled, as well as deserted settlements, two abbeys, five chapels and two holy wells. The 49 post-medieval sites include ten bridges, various sites relating to quarries, mines, engine houses, and railways, and five World War II defences.

The northern prehistoric sites are listed at List of prehistoric scheduled monuments in Gwynedd (former Caernarvonshire)

The southern prehistoric sites are listed at List of prehistoric scheduled monuments in Gwynedd (former Merionethshire)

Scheduled monuments have statutory protection. It is illegal to disturb the ground surface or any standing remains. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales.[1] The list of scheduled monuments below is supplied by Cadw[2] with additional material from RCAHMW and Gwynedd Archaeological Trust.

Main articles: Lists of scheduled monuments in Wales and Scheduled monuments in Gwynedd

Roman to modern scheduled monuments in Gwynedd

Image Name Site type Community Location Details Historic County Period SAM No
& Refs
Enclosure & Settlement 400m East of Cyfannedd Fawr Hut circle settlement Arthog 52°41′25″N 4°01′20″W / 52.6904°N 4.0223°W / 52.6904; -4.0223 (Enclosure & Settlement 400m East of Cyfannedd Fawr),
SH634122 		Merionethshire 2Roman
 ME086
[3]
Round Hut and Cairns on NW Slope of Braich Ddu Ring cairn Arthog 52°41′23″N 4°01′15″W / 52.6896°N 4.0208°W / 52.6896; -4.0208 (Round Hut and Cairns on NW Slope of Braich Ddu),
SH635121 		Merionethshire 2Roman
 ME100
[4]
View of Bangor and Penrhyn from the Roman Camp Pier Camp Earthwork Bangor 53°14′02″N 4°07′39″W / 53.2339°N 4.1276°W / 53.2339; -4.1276 (Pier Camp),
SH581729 		Strongly defensible earthworth hillfort. A 4th century Roman coin found on the site. Caernarvonshire 2Unknown
 CN073
[5]
Dinas Emrys Dinas Emrys Camp Hillfort Beddgelert 53°01′20″N 4°04′44″W / 53.0222°N 4.0788°W / 53.0222; -4.0788 (Dinas Emrys Camp),
SH606492 		Hilltop fort which tradition links with Vortigern and Merlin. Iron Age, Roman and Dark Age evidence has all been found. Present stonework probably, medieval. Caernarvonshire 2Roman
 CN018
[6]
Brithdir Roman Fort Roman fort Brithdir and Llanfachreth 52°45′13″N 3°49′15″W / 52.7535°N 3.8209°W / 52.7535; -3.8209 (Brithdir Roman Fort),
SH772188 		Roman fortlet which may also have had its own settlement. Now on the edge of the village if Brithdir. Merionethshire 2Roman
 ME080
[7]
Looking NW across the site of the Segontium Roman Fort Segontium Roman Fort Property in the care of Cadw Roman fort Caernarfon 53°08′14″N 4°15′58″W / 53.1372°N 4.2662°W / 53.1372; -4.2662 (Segontium Roman Site),
SH485624 		Regiment garrisoned here from 77AD to 394AD, a uniquely long occupation within Wales. It was the administrative centre for NW Wales throughout this period. Excavated buildings on view. Caernarvonshire 2Roman
 CN006
[8]
Lower Roman Fort Roman fort Caernarfon 53°08′12″N 4°16′13″W / 53.1367°N 4.2702°W / 53.1367; -4.2702 (Lower Roman Fort),
SH482623 		Caernarvonshire 2Roman
 CN094
[9]
Bryn-Glas Roman Signal Station Signal station Caernarfon 53°08′50″N 4°14′24″W / 53.1473°N 4.2401°W / 53.1473; -4.2401 (Bryn-Glas Roman Signal Station),
SH502634 		Caernarvonshire 2Roman
 CN188
[10]
Llanfor Roman Fort and Camps Roman fort Llandderfel 52°54′45″N 3°34′55″W / 52.9124°N 3.582°W / 52.9124; -3.582 (Llanfor Roman Fort and Camps (revealed by Aerial Photography)),
SH937361 		(revealed by Aerial Photography) Merionethshire 2Roman
 ME092
[11]
Caer Gai Roman Site Roman fort Llanuwchllyn 52°52′08″N 3°40′07″W / 52.8688°N 3.6686°W / 52.8688; -3.6686 (Caer Gai Roman Site),
SH877314 		Merionethshire 2Roman
 ME018
[12]
Dinas y Prif Camp Enclosure Llanwnda 53°05′42″N 4°17′46″W / 53.0949°N 4.2961°W / 53.0949; -4.2961 (Dinas y Prif Camp),
SH463577 		Caernarvonshire 2Roman
 CN030
[13]
Castell Tomen y Mur Castell Tomen y Mur Amphitheatre Maentwrog 52°55′48″N 3°55′30″W / 52.9299°N 3.925°W / 52.9299; -3.925 (Castell Tomen y Mur),
SH705386 		Merionethshire 2Roman
 ME002
[14]
Tomen y Mur Roman fort Maentwrog 52°55′39″N 3°55′17″W / 52.9276°N 3.9214°W / 52.9276; -3.9214 (Tomen y Mur),
SH709384 		Merionethshire 2Roman
 ME078
[15]
Cefn-Caer Roman Site Roman fort Pennal 52°35′00″N 3°54′45″W / 52.5832°N 3.9125°W / 52.5832; -3.9125 (Cefn-Caer Roman Site),
SH705000 		Merionethshire 2Roman
 ME009
[16]
Roman Bath-House, Tremadoc Bath-house Porthmadog 52°56′21″N 4°08′54″W / 52.9392°N 4.1482°W / 52.9392; -4.1482 (Roman Bath-House, Tremadoc),
SH557401 		Caernarvonshire 2Roman
 CN174
[17]
Roman Kilns 225m SE of Pen-y-Stryd Kiln Trawsfynydd 52°52′11″N 3°53′30″W / 52.8697°N 3.8918°W / 52.8697; -3.8918 (Roman Kilns 225m SE of Pen-y-Stryd),
SH727319 		Merionethshire 2Roman
 ME071
[18]
Dol-ddinas Roman Earthworks Practice camp Trawsfynydd 52°55′27″N 3°53′01″W / 52.9241°N 3.8836°W / 52.9241; -3.8836 (Dol-ddinas Roman Earthworks),
SH734379 		Merionethshire 2Roman
 ME077
[19]
Roman Practice Camp 440m WSW of Braich-ddu Practice camp Trawsfynydd 52°55′39″N 3°54′39″W / 52.9274°N 3.9109°W / 52.9274; -3.9109 (Roman Practice Camp 440m WSW of Braich-ddu),
SH716383 		Merionethshire 2Roman
 ME260
[20]
Roman Practice Camps 190m W of Llyn Hiraethlyn Practice camp Trawsfynydd 52°54′51″N 3°52′24″W / 52.9141°N 3.8733°W / 52.9141; -3.8733 (Roman Practice Camps 190m W of Llyn Hiraethlyn),
SH741368 		Merionethshire 2Roman
 ME261
[21]
Roman Road Extending SE 650m from Llyn Hiraethlyn toward Glasgoed Roman Road Trawsfynydd 52°54′49″N 3°52′06″W / 52.9135°N 3.8683°W / 52.9135; -3.8683 (Roman Road Extending SE 650m from Llyn Hiraethlyn toward Glasgoed),
SH743368 		Merionethshire 2Roman
 ME262
[22]
The Senacus Stone (formerly in Tudweiliog, Dwyfer) Inscribed stone Aberdaron 52°48′14″N 4°42′41″W / 52.8039°N 4.7113°W / 52.8039; -4.7113 (The Senacus Stone (formerly in Tudweiliog, Dwyfer)),
SH173263 		Caernarvonshire 3Early Medieval
 CN089
[23]
The Veracius Stone (formerly in Tudweiliog, Dwyfer) Inscribed stone Aberdaron 52°48′14″N 4°42′41″W / 52.8039°N 4.7113°W / 52.8039; -4.7113 (The Veracius Stone (formerly in Tudweiliog, Dwyfer)),
SH173263 		Caernarvonshire 3Early Medieval
 CN090
[24]
Cross-Inscribed Stone in the Chapel, Bardsey Island Cross-marked stone Aberdaron 52°45′51″N 4°47′12″W / 52.7641°N 4.7868°W / 52.7641; -4.7868 (Cross-Inscribed Stone in the Chapel, Bardsey Island),
SH120221 		Caernarvonshire 3Early Medieval
 CN141
[25]
Inscribed Stone in the Chapel, Bardsey Island Inscribed stone Aberdaron 52°45′51″N 4°47′12″W / 52.7641°N 4.7868°W / 52.7641; -4.7868 (Inscribed Stone in the Chapel, Bardsey Island),
SH120221 		Caernarvonshire 3Early Medieval
 CN142
[26]
Sundial in Clynnog Fawr Churchyard Sundial Clynnog 53°01′15″N 4°21′56″W / 53.0208°N 4.3656°W / 53.0208; -4.3656 (Sundial in Clynnog Fawr Churchyard),
SH414496 		Caernarvonshire 3Early Medieval
 CN062
[27]
Cross Inscribed Stone Near Capel Uchaf Cross-marked stone Clynnog 53°01′23″N 4°20′30″W / 53.023°N 4.3417°W / 53.023; -4.3417 (Cross Inscribed Stone Near Capel Uchaf),
SH430498 		Caernarvonshire 3Early Medieval
 CN213
[28]
Gesail Gyfarch Inscribed Stone Inscribed stone Dolbenmaen 52°57′10″N 4°10′29″W / 52.9528°N 4.1746°W / 52.9528; -4.1746 (Gesail Gyfarch Inscribed Stone),
SH540417 		Caernarvonshire 3Early Medieval
 CN019
[29]
Llystyn Gwyn Inscribed Stone Inscribed stone Dolbenmaen 52°59′08″N 4°15′45″W / 52.9855°N 4.2626°W / 52.9855; -4.2626 (Llystyn Gwyn Inscribed Stone),
SH482455 		Caernarvonshire 3Early Medieval
 CN021
[30]
Early Christian Inscribed Stone in the Churchyard, Llanaelhaearn Inscribed stone Llanaelhaearn 52°58′35″N 4°24′15″W / 52.9764°N 4.4041°W / 52.9764; -4.4041 (Early Christian Inscribed Stone in the Churchyard, Llanaelhaearn),
SH386448 		Caernarvonshire 3Early Medieval
 CN084
[31]
Part of Inscribed Stone Built into Wall of Churchyard Inscribed stone Llanaelhaearn 52°58′35″N 4°24′15″W / 52.9763°N 4.4041°W / 52.9763; -4.4041 (Part of Inscribed Stone Built into Wall of Churchyard),
SH386448 		Caernarvonshire 3Early Medieval
 CN085
[32]
Inscribed Stone in St Cian's Churchyard, Llangian Inscribed stone Llanengan 52°49′51″N 4°31′53″W / 52.8309°N 4.5314°W / 52.8309; -4.5314 (Inscribed Stone in St Cian's Churchyard, Llangian),
SH295289 		Caernarvonshire 3Early Medieval
 CN087
[33]
Cross-Incised Stone in Llangybi Churchyard Cross-marked stone Llanystumdwy 52°56′41″N 4°20′25″W / 52.9447°N 4.3402°W / 52.9447; -4.3402 (Cross-Incised Stone in Llangybi Churchyard),
SH428411 		Caernarvonshire 3Early Medieval
 CN100
[34]
Cross Slab Built into Farm Building Ty'n-y-Cae Cross-marked stone Nefyn 52°56′25″N 4°30′46″W / 52.9404°N 4.5127°W / 52.9404; -4.5127 (Cross Slab Built into Farm Building Ty'n-y-Cae),
SH312410 		Caernarvonshire 3Early Medieval
 CN180
[35]
Tymawr Cross-Incised Stone Cross-marked stone Pistyll 52°56′50″N 4°30′08″W / 52.9473°N 4.5023°W / 52.9473; -4.5023 (Tymawr Cross-Incised Stone),
SH319418 		Caernarvonshire 3Early Medieval
 CN101
[36]
Aber Castle Mound (Pen-y-Mwd) Motte Aber 53°14′02″N 4°00′50″W / 53.2338°N 4.014°W / 53.2338; -4.014 (Aber Castle Mound (Pen-y-Mwd)),
SH656726 		Caernarvonshire 4Medieval
 CN007
[37]
Medieval Homestead 400m SE of Maes y Gaer Rectangular hut settlement Aber 53°13′51″N 3°59′56″W / 53.2307°N 3.9988°W / 53.2307; -3.9988 (Medieval Homestead 400m SE of Maes y Gaer),
SH666722 		Caernarvonshire 4Medieval
 CN137
[38]
Enclosure & Associated Structures at Pen-y-Bryn Enclosure Aber 53°14′06″N 4°00′43″W / 53.235°N 4.012°W / 53.235; -4.012 (Enclosure & Associated Structures at Pen-y-Bryn),
SH658727 		Caernarvonshire 4Medieval
 CN218
[39]
Bardsey Island - St Mary's Abbey St Mary's Abbey, Bardsey Island Abbey Aberdaron 52°45′51″N 4°47′16″W / 52.7643°N 4.7877°W / 52.7643; -4.7877 (St Mary's Abbey, Bardsey Island),
SH120221 		Caernarvonshire 4Medieval
 CN068
[40]
Site of St Merin's Church Church Aberdaron 52°50′59″N 4°42′51″W / 52.8498°N 4.7143°W / 52.8498; -4.7143 (Site of St Merin's Church),
SH173314 		Caernarvonshire 4Medieval
 CN171
[41]
Long Houses, Enclosures & Field Systems, Bardsey Island Rectangular hut Aberdaron 52°46′03″N 4°47′27″W / 52.7674°N 4.7908°W / 52.7674; -4.7908 (Long Houses, Enclosures & Field Systems, Bardsey Island),
SH118225 		Caernarvonshire 4Medieval
 CN186
[42]
Capel Anelog Chapel Aberdaron 52°48′47″N 4°44′16″W / 52.813°N 4.7377°W / 52.813; -4.7377 (Capel Anelog),
SH155274 		Caernarvonshire 4Medieval
 CN220
[43]
Long House South of Talarfor Longhouse Aberdaron 52°49′27″N 4°37′30″W / 52.8241°N 4.6251°W / 52.8241; -4.6251 (Long House South of Talarfor),
SH232284 		Caernarvonshire 4Medieval
 CN318
[44]
St Mary's Church Church Aberdaron 52°47′36″N 4°45′40″W / 52.7934°N 4.7612°W / 52.7934; -4.7612 (St Mary's Church),
SH139253 		Caernarvonshire 4Medieval
 CN381
[45]
Llys Bradwen Medieval Site Enclosure Arthog 52°42′20″N 3°59′57″W / 52.7055°N 3.9993°W / 52.7055; -3.9993 (Llys Bradwen Medieval Site),
SH650138 		Merionethshire 4Medieval
 ME022
[46]
Cyfannedd-Fach Homestead Platform house Arthog 52°41′44″N 4°01′33″W / 52.6955°N 4.0257°W / 52.6955; -4.0257 (Cyfannedd-Fach Homestead),
SH631127 		Merionethshire 4Medieval
 ME101
[47]
Tomen y Bala Castle Mound Motte Bala 52°54′41″N 3°35′44″W / 52.9115°N 3.5955°W / 52.9115; -3.5955 (Tomen y Bala Castle Mound),
SH928360 		Merionethshire 4Medieval
 ME016
[48]
Ty'n Twr Building (Unclassified) Bethesda 53°10′24″N 4°03′26″W / 53.1734°N 4.0571°W / 53.1734; -4.0571 (Ty'n Twr),
SH626660 		Caernarvonshire 4Medieval
 CN219
[49]
Hafod-y-Wern Long Hut Rectangular hut Betws Garmon 53°05′32″N 4°12′06″W / 53.0922°N 4.2016°W / 53.0922; -4.2016 (Hafod-y-Wern Long Hut),
SH526572 		Caernarvonshire 4Medieval
 CN307
[50]
Ystrad Rural Settlement Deserted Rural Settlement Betws Garmon 53°05′37″N 4°10′29″W / 53.0935°N 4.1746°W / 53.0935; -4.1746 (Ystrad Rural Settlement),
SH544573 		Caernarvonshire 4Medieval
 CN316
[51]
Cored Gwyrfai Fish Weir Fish weir Bontnewydd 53°07′22″N 4°18′54″W / 53.1228°N 4.3151°W / 53.1228; -4.3151 (Cored Gwyrfai Fish Weir),
SH453607 		Caernarvonshire 4Medieval
 CN334
[52]
Castell Cynfal, Bryn Crug Motte Bryn-crug 52°35′41″N 4°02′46″W / 52.5946°N 4.0462°W / 52.5946; -4.0462 (Castell Cynfal, Bryn Crug),
SH615016 		Merionethshire 4Medieval
 ME121
[53]
Caernarfon Town Wall Caernarfon Town Walls Property in the care of Cadw Town Wall Caernarfon 53°08′28″N 4°16′31″W / 53.141°N 4.2754°W / 53.141; -4.2754 (Caernarfon Town Wall),
SH479626 		Caernarvonshire 4Medieval
 CN034
[54]
Caernarfon Castle Caernarfon Castle Property in the care of Cadw World Heritage Site Castle Caernarfon 53°08′22″N 4°16′37″W / 53.1394°N 4.277°W / 53.1394; -4.277 (Caernarfon Castle),
SH477626 		Caernarvonshire 4Medieval
 CN079
[55]
St Beuno's Well, Clynnog Fawr St Beuno's Well Holy Well Clynnog 53°01′08″N 4°22′01″W / 53.0188°N 4.367°W / 53.0188; -4.367 (St Beuno's Well),
SH413494 		Caernarvonshire 4Medieval
 CN091
[56]
Long Hut North of Cwm Farm Rectangular hut Clynnog 52°59′19″N 4°19′58″W / 52.9887°N 4.3327°W / 52.9887; -4.3327 (Long Hut North of Cwm Farm),
SH435460 		Caernarvonshire 4Medieval
 CN309
[57]
Criccieth Castle Criccieth Castle Property in the care of Cadw Castle Criccieth 52°54′58″N 4°13′57″W / 52.916°N 4.2324°W / 52.916; -4.2324 (Criccieth Castle),
SH499377 		Caernarvonshire 4Medieval
 CN015
[58]
Criccieth Castle, Outer Bank Defences Castle Criccieth 52°54′57″N 4°14′02″W / 52.9157°N 4.2338°W / 52.9157; -4.2338 (Criccieth Castle, Outer Bank Defences),
SH499377 		Caernarvonshire 4Medieval
 CN173
[59]
Dolbenmaen Castle Mound Motte Dolbenmaen 52°57′51″N 4°13′30″W / 52.9642°N 4.2251°W / 52.9642; -4.2251 (Dolbenmaen Castle Mound),
SH506430 		Caernarvonshire 4Medieval
 CN063
[60]
Maes Coch Deserted Rural Settlement Rectangular hut settlement Dolgellau 52°43′16″N 3°51′42″W / 52.721°N 3.8617°W / 52.721; -3.8617 (Maes Coch Deserted Rural Settlement),
SH743153 		Merionethshire 4Medieval
 ME196
[61]
Settlement & Fields Systems above Egryn Abbey House platform Dyffryn Ardudwy 52°45′42″N 4°04′10″W / 52.7617°N 4.0695°W / 52.7617; -4.0695 (Settlement & Fields Systems above Egryn Abbey),
SH604202 		Merionethshire 4Medieval
 ME122
[62]
Eithin-Fynydd Platform House Settlement Deserted Rural Settlement Dyffryn Ardudwy 52°46′30″N 4°04′38″W / 52.7749°N 4.0771°W / 52.7749; -4.0771 (Eithin-Fynydd Platform House Settlement),
SH599217 		Merionethshire 4Medieval
 ME202
[63]
Deserted Rural Settlement South of Ffridd Olchfa Deserted Rural Settlement Dyffryn Ardudwy 52°44′47″N 4°03′35″W / 52.7465°N 4.0598°W / 52.7465; -4.0598 (Deserted Rural Settlement South of Ffridd Olchfa),
SH610185 		Merionethshire 4Medieval
 ME203
[64]
Harlech Castle at sundown Harlech Castle Property in the care of Cadw World Heritage Site Castle Harlech 52°51′37″N 4°06′33″W / 52.8602°N 4.1091°W / 52.8602; -4.1091 (Harlech Castle),
SH581312 		Merionethshire 4Medieval
 ME044
[65]
Medieval Ecclesiastical Structure SE of Ty'n y Coed Cottage Chapel Llanbedr 52°49′35″N 4°05′18″W / 52.8265°N 4.0882°W / 52.8265; -4.0882 (Medieval Ecclesiastical Structure SE of Ty'n y Coed Cottage),
SH594274 		Merionethshire 4Medieval
 ME249
[66]
Dolbadarn Castle, Llanberis Pass Dolbadarn Castle Property in the care of Cadw Castle Llanberis 53°07′00″N 4°06′51″W / 53.1166°N 4.1143°W / 53.1166; -4.1143 (Dolbadarn Castle),
SH586598 		Caernarvonshire 4Medieval
 CN066
[67]
Cwm Brwynog Deserted Rural Settlement Deserted Rural Settlement Llanberis 53°05′24″N 4°06′06″W / 53.0901°N 4.1017°W / 53.0901; -4.1017 (Cwm Brwynog Deserted Rural Settlement),
SH594574 		Caernarvonshire 4Medieval
 CN315
[68]
Rectangular Earthwork 110m NW of Coed Ty Mawr Moated Site Llanddeiniolen 53°10′31″N 4°09′46″W / 53.1753°N 4.1629°W / 53.1753; -4.1629 (Rectangular Earthwork 110m NW of Coed Ty Mawr),
SH555664 		Caernarvonshire 4Medieval
 CN156
[69]
Castell Llanddeiniolen Motte Llanddeiniolen 53°10′04″N 4°08′29″W / 53.1677°N 4.1414°W / 53.1677; -4.1414 (Castell Llanddeiniolen),
SH569655 		Caernarvonshire 4Medieval
 CN197
[70]
Llys Dinorwig Enclosure Llanddeiniolen 53°08′47″N 4°09′03″W / 53.1463°N 4.1508°W / 53.1463; -4.1508 (Llys Dinorwig),
SH562631 		Caernarvonshire 4Medieval
 CN223
[71]
Pen-Ucha'r-Llan Ringwork Ringwork Llandderfel 52°55′07″N 3°34′50″W / 52.9186°N 3.5805°W / 52.9186; -3.5805 (Pen-Ucha'r-Llan Ringwork),
SH938368 		Merionethshire 4Medieval
 ME042
[72]
Domen Ddreiniog Motte Llanegryn 52°36′44″N 4°04′25″W / 52.6121°N 4.0737°W / 52.6121; -4.0737 (Domen Ddreiniog),
SH596036 		Merionethshire 4Medieval
 ME054
[73]
Cymer Abbey Cymer Abbey Property in the care of Cadw Abbey Llanelltyd 52°45′29″N 3°53′46″W / 52.7581°N 3.8962°W / 52.7581; -3.8962 (Cymer Abbey),
SH721195 		Merionethshire 4Medieval
 ME001
[74]
Cymmer Castle Motte Llanelltyd 52°45′31″N 3°52′51″W / 52.7585°N 3.8808°W / 52.7585; -3.8808 (Cymmer Castle),
SH731195 		Merionethshire 4Medieval
 ME150
[75]
Castell y Bere courtyard Castell y Bere Property in the care of Cadw Castle Llanfihangel-y-Pennant 52°39′30″N 3°58′16″W / 52.6583°N 3.9711°W / 52.6583; -3.9711 (Castell y Bere),
SH667085 		Merionethshire 4Medieval
 ME023
[76]
Pont Maesgwm Deserted Rural Settlement Deserted Rural Settlement Llanfrothen 52°58′34″N 4°01′57″W / 52.976°N 4.0324°W / 52.976; -4.0324 (Pont Maesgwm Deserted Rural Settlement),
SH635440 		Merionethshire 4Medieval
 ME193
[77]
Castell Gronw Castle Mound Motte Llangywer 52°54′07″N 3°35′32″W / 52.902°N 3.5921°W / 52.902; -3.5921 (Castell Gronw Castle Mound),
SH930350 		Merionethshire 4Medieval
 ME067
[78]
Huts 90m N of Cil Twllan Platform house Llanllechid 53°10′40″N 4°02′25″W / 53.1779°N 4.0403°W / 53.1779; -4.0403 (Huts 90m N of Cil Twllan),
SH637664 		Caernarvonshire 4Medieval
 CN144
[79]
Cwm Caseg Deserted Rural Settlement Deserted Rural Settlement Llanllechid 53°10′39″N 4°01′31″W / 53.1774°N 4.0254°W / 53.1774; -4.0254 (Cwm Caseg Deserted Rural Settlement),
SH647664 		Caernarvonshire 4Medieval
 CN314
[80]
Ty-Newydd Mound & Bailey Castle Motte & Bailey Llannor 52°55′00″N 4°27′37″W / 52.9166°N 4.4604°W / 52.9166; -4.4604 (Ty-Newydd Mound & Bailey Castle),
SH346383 		Caernarvonshire 4Medieval
 CN096
[81]
Castell Carn Dochan Castle Llanuwchllyn 52°51′40″N 3°42′50″W / 52.861°N 3.7139°W / 52.861; -3.7139 (Castell Carn Dochan),
SH847306 		Merionethshire 4Medieval
 ME049
[82]
Tomen Fawr Ringwork Llanystumdwy 52°54′50″N 4°18′01″W / 52.9139°N 4.3002°W / 52.9139; -4.3002 (Tomen Fawr),
SH454376 		Caernarvonshire 4Medieval
 CN031
[83]
Ffynnon Gybi Holy Well Llanystumdwy 52°56′44″N 4°20′32″W / 52.9456°N 4.3421°W / 52.9456; -4.3421 (Ffynnon Gybi),
SH427412 		Caernarvonshire 4Medieval
 CN037
[84]
Penarth Fawr, near Chwilog, Pwllheli Penarth Fawr Medieval House Property in the care of Cadw House (domestic) Llanystumdwy 52°54′48″N 4°21′09″W / 52.9132°N 4.3524°W / 52.9132; -4.3524 (Penarth Fawr Medieval Hall),
SH419376 		Caernarvonshire 4Medieval
 CN086
[85]
Tomen Las Castle Mound Motte Pennal 52°35′04″N 3°55′28″W / 52.5845°N 3.9245°W / 52.5845; -3.9245 (Tomen Las Castle Mound),
SH697002 		Merionethshire 4Medieval
 ME043
[86]
Inscribed Stone in Llanfihangel Traethau Churchyard Inscribed stone Talsarnau 52°53′51″N 4°05′25″W / 52.8975°N 4.0902°W / 52.8975; -4.0902 (Inscribed Stone in Llanfihangel Traethau Churchyard),
SH595353 		Merionethshire 4Medieval
 ME050
[87]
Llidiart-Garw Platform House and Paddock Platform house Talsarnau 52°52′42″N 4°03′51″W / 52.8784°N 4.0641°W / 52.8784; -4.0641 (Llidiart-Garw Platform House and Paddock),
SH611332 		Merionethshire 4Medieval
 ME112
[88]
Castell Prysor Castell Prysor Motte & Bailey Trawsfynydd 52°54′53″N 3°50′55″W / 52.9148°N 3.8487°W / 52.9148; -3.8487 (Castell Prysor),
SH757368 		Merionethshire 4Medieval
 ME045
[89]
Bont Newydd Bont-Newydd Bridge Aber 53°13′42″N 4°00′18″W / 53.2282°N 4.0049°W / 53.2282; -4.0049 (Bont-Newydd),
SH662720 		Caernarvonshire 5Post-Medieval/Modern
 CN061
[90]
Cwm Erch Copper Mine Copper mine Beddgelert 53°03′25″N 4°02′24″W / 53.057°N 4.04°W / 53.057; -4.04 (Cwm Erch Copper Mine),
SH633530 		Caernarvonshire 5Post-Medieval/Modern
 CN193
[91]
Glasdir Copper and Gold Mine Mill Mill Brithdir and Llanfachreth 52°47′09″N 3°52′17″W / 52.7857°N 3.8715°W / 52.7857; -3.8715 (Glasdir Copper and Gold Mine Mill),
SH738225 		Merionethshire 5Post-Medieval/Modern
 ME206
[92]
historic bridge known as "Pont Y Cim" Pont y Cim Bridge Clynnog 53°02′43″N 4°19′35″W / 53.0452°N 4.3263°W / 53.0452; -4.3263 (Pont y Cim),
SH441523 		Caernarvonshire 5Post-Medieval/Modern
 CN053
[93]
Water Balance Incline at Aberllefenni Slate Quarry Incline Corris 52°40′29″N 3°49′26″W / 52.6746°N 3.824°W / 52.6746; -3.824 (Water Balance Incline at Aberllefenni Slate Quarry),
SH767101 		Merionethshire 5Post-Medieval/Modern
 ME185
[94]
Gorseddau or Ynysypandy Slate Factory Slate mill Dolbenmaen 52°58′05″N 4°09′35″W / 52.9681°N 4.1598°W / 52.9681; -4.1598 (Gorseddau or Ynysypandy Slate Factory),
SH550433 		Caernarvonshire 5Post-Medieval/Modern
 CN160
[95]
Gilfach Copper Mine Copper mine Dolbenmaen 53°00′25″N 4°11′54″W / 53.0069°N 4.1984°W / 53.0069; -4.1984 (Gilfach Copper Mine),
SH526477 		Caernarvonshire 5Post-Medieval/Modern
 CN170
[96]
Gorseddau Slate Quarry Railway Dolbenmaen 52°59′09″N 4°07′40″W / 52.9858°N 4.1279°W / 52.9858; -4.1279 (Gorseddau Slate Quarry),
SH572452 		Caernarvonshire 5Post-Medieval/Modern
 CN303
[97]
Treforys Deserted Quarry Settlement Settlement Dolbenmaen 52°59′11″N 4°08′42″W / 52.9865°N 4.1451°W / 52.9865; -4.1451 (Treforys Deserted Quarry Settlement),
SH560453 		Caernarvonshire 5Post-Medieval/Modern
 CN321
[98]
Pont Scethin Pont Scethin Bridge Dyffryn Ardudwy 52°47′32″N 4°01′35″W / 52.7922°N 4.0265°W / 52.7922; -4.0265 (Pont Scethin),
SH634235 		Merionethshire 5Post-Medieval/Modern
 ME126
[99]
Pont Dol-y-Moch Bridge Ffestiniog 52°57′22″N 3°57′33″W / 52.9561°N 3.9592°W / 52.9561; -3.9592 (Pont Dol-y-Moch),
SH685416 		Merionethshire 5Post-Medieval/Modern
 ME039
[100]
Gold mine Mills Berth-Llwyd & Cefn Coch Gold Mining Complex Mill Ganllwyd 52°47′36″N 3°54′13″W / 52.7932°N 3.9035°W / 52.7932; -3.9035 (Berth-Llwyd & Cefn Coch Gold Mining Complex),
SH717233 		Merionethshire 5Post-Medieval/Modern
 ME119
[101]
Hermon or Dolfwynog Copper/Gold Bog Kiln Kiln Ganllwyd 52°48′43″N 3°52′18″W / 52.812°N 3.8716°W / 52.812; -3.8716 (Hermon or Dolfwynog Copper/Gold Bog Kiln),
SH739254 		Merionethshire 5Post-Medieval/Modern
 ME198
[102]
Cwm Heisian West Lead and Gold Mine Mill Ganllwyd 52°50′03″N 3°52′34″W / 52.8343°N 3.876°W / 52.8343; -3.876 (Cwm Heisian West Lead and Gold Mine),
SH737279 		Merionethshire 5Post-Medieval/Modern
 ME204
[103]
Pont Llanbedr Bridge Llanbedr 52°49′13″N 4°06′02″W / 52.8203°N 4.1006°W / 52.8203; -4.1006 (Pont Llanbedr),
SH585268 		Merionethshire 5Post-Medieval/Modern
 ME026
[104]
Dinorwig quarry Dinorwic Quarry: Hafod Owen Winding Engine, Locomotive Shed, Main Waterwheel and Housing Wheelhouse Llanddeiniolen 53°07′13″N 4°06′55″W / 53.1203°N 4.1154°W / 53.1203; -4.1154 (Dinorwic Quarry: Hafod Owen Winding Engine, Locomotive Shed, Main Waterwheel and Housing),
SH585602 		Caernarvonshire 5Post-Medieval/Modern
 CN163
[105]
Dinorwic Quarry Barracks 'A' Incline Barracks Llanddeiniolen 53°07′12″N 4°06′39″W / 53.12°N 4.1108°W / 53.12; -4.1108 (Dinorwic Quarry Barracks 'A' Incline),
SH586601 		Caernarvonshire 5Post-Medieval/Modern
 CN177
[106]
Vivian Slate Quarry, Inclines, Walia & associated structures Incline Llanddeiniolen 53°07′28″N 4°06′51″W / 53.1244°N 4.1141°W / 53.1244; -4.1141 (Vivian Slate Quarry, Inclines, Walia & associated structures),
SH586606 		Caernarvonshire 5Post-Medieval/Modern
 CN198
[107]
Dinorwic Quarry Slate mill Llanddeiniolen 53°07′25″N 4°05′48″W / 53.1236°N 4.0966°W / 53.1236; -4.0966 (Dinorwic Quarry),
SH597605 		Caernarvonshire 5Post-Medieval/Modern
 CN337
[108]
Pont Fawr Pont Fawr Bridge Llandderfel 52°55′02″N 3°30′56″W / 52.9171°N 3.5155°W / 52.9171; -3.5155 (Pont Fawr),
SH982366 		Merionethshire 5Post-Medieval/Modern
 ME027
[109]
Dinas Dinlle Seagull Trench Seagull Trench Llandwrog 53°04′59″N 4°20′07″W / 53.0831°N 4.3354°W / 53.0831; -4.3354 (Dinas Dinlle Seagull Trench),
SH436565 		Caernarvonshire 5Post-Medieval/Modern
 CN396
[110]
Slate Gwaliau at Felin Fawr, Penrhyn Wall Llandygai 53°10′37″N 4°04′26″W / 53.1769°N 4.074°W / 53.1769; -4.074 (Slate Gwaliau at Felin Fawr, Penrhyn),
SH614664 		Caernarvonshire 5Post-Medieval/Modern
 CN297
[111]
Ogwen Fish Weir Fish weir Llandygai 53°14′25″N 4°05′39″W / 53.2404°N 4.0943°W / 53.2404; -4.0943 (Ogwen Fish Weir),
SH600730 		Caernarvonshire 5Post-Medieval/Modern
 CN335
[112]
Cegin Viaduct (Penrhyn Railroad) Viaduct Llandygai 53°13′48″N 4°06′35″W / 53.2299°N 4.1098°W / 53.2299; -4.1098 (Cegin Viaduct (Penrhyn Railroad)),
SH592723 		Caernarvonshire 5Post-Medieval/Modern
 CN380
[113]
Pont Llanelltyd Llanelltyd Bridge Bridge Llanelltyd 52°45′22″N 3°54′04″W / 52.7562°N 3.901°W / 52.7562; -3.901 (Llanelltyd Bridge),
SH718193 		Merionethshire 5Post-Medieval/Modern
 ME006
[114]
Water Powered Chain Incline at Bryneglwys Slate Quarry Water Power System Llanfihangel-y-Pennant 52°37′44″N 3°55′55″W / 52.6289°N 3.9319°W / 52.6289; -3.9319 (Water Powered Chain Incline at Bryneglwys Slate Quarry),
SH693052 		Merionethshire 5Post-Medieval/Modern
 ME186
[115]
Alltwyllt Slate Quarry Incline Incline Llanfihangel-y-Pennant 52°38′27″N 3°57′01″W / 52.6407°N 3.9503°W / 52.6407; -3.9503 (Alltwyllt Slate Quarry Incline),
SH681065 		Merionethshire 5Post-Medieval/Modern
 ME205
[116]
Rhosydd Incline, Drumhouse & Tramway Industrial monument Llanfrothen 52°59′52″N 4°00′05″W / 52.9977°N 4.0013°W / 52.9977; -4.0013 (Rhosydd Incline, Drumhouse & Tramway),
SH657463 		Merionethshire 5Post-Medieval/Modern
 ME142
[117]
Corn Drying Kiln Near Carn-Gadell Uchaf Kiln Llangelynnin 52°39′18″N 4°05′14″W / 52.655°N 4.0871°W / 52.655; -4.0871 (Corn Drying Kiln Near Carn-Gadell Uchaf),
SH589084 		Merionethshire 5Post-Medieval/Modern
 ME116
[118]
The Holyhead Road: the Ogwen Pass Road Llanllechid 53°07′39″N 4°01′21″W / 53.1276°N 4.0226°W / 53.1276; -4.0226 (The Holyhead Road: the Ogwen Pass),
SH647608 		Caernarvonshire 5Post-Medieval/Modern
 CN338
[119]
Drws y Coed Copper Mine Copper mine Llanllyfni 53°03′29″N 4°10′15″W / 53.0581°N 4.1707°W / 53.0581; -4.1707 (Drws y Coed Copper Mine),
SH546534 		Caernarvonshire 5Post-Medieval/Modern
 CN162
[120]
Dorothea pumping engine Dorothea Quarry Beam Engine Engine house Llanllyfni 53°03′15″N 4°14′37″W / 53.0542°N 4.2435°W / 53.0542; -4.2435 (Dorothea Quarry Beam Engine),
SH497531 		Caernarvonshire 5Post-Medieval/Modern
 CN165
[121]
Dorothea Quarry, Pyramids, Inclines, Mill & Winding Houses, etc. Engine house Llanllyfni 53°03′13″N 4°14′21″W / 53.0537°N 4.2393°W / 53.0537; -4.2393 (Dorothea Quarry, Pyramids, Inclines, Mill & Winding Houses, etc),
SH500530 		Caernarvonshire 5Post-Medieval/Modern
 CN199
[122]
Pen-yr-Orsedd Quarry, Blondins and Associated Structures Engine house Llanllyfni 53°03′49″N 4°13′35″W / 53.0635°N 4.2265°W / 53.0635; -4.2265 (Pen-yr-Orsedd Quarry, Blondins and Associated Structures),
SH509541 		Caernarvonshire 5Post-Medieval/Modern
 CN208
[123]
Ty Mawr East Slate Quarry Winding Engine House Engine house Llanllyfni 53°02′57″N 4°14′27″W / 53.0492°N 4.2407°W / 53.0492; -4.2407 (Ty Mawr East Slate Quarry Winding Engine House),
SH499525 		Caernarvonshire 5Post-Medieval/Modern
 CN300
[124]
Blaen y Cae Slate Quarry Unclassified site Llanllyfni 53°03′33″N 4°14′35″W / 53.0591°N 4.243°W / 53.0591; -4.243 (Blaen y Cae Slate Quarry),
SH497536 		Caernarvonshire 5Post-Medieval/Modern
 CN301
[125]
Cloddfa'r Lon Slate Quarry Slate mill Llanllyfni 53°03′23″N 4°14′08″W / 53.0564°N 4.2356°W / 53.0564; -4.2356 (Cloddfa'r Lon Slate Quarry),
SH503534 		Caernarvonshire 5Post-Medieval/Modern
 CN302
[126]
Old Stone Bridge over the Afon Taihirion - geograph.org.uk - 98948.jpg
 Pont Tai-Hirion Old Bridge Bridge Llanycil 52°56′33″N 3°46′56″W / 52.9424°N 3.7821°W / 52.9424; -3.7821 (Pont Tai-Hirion Old Bridge),
SH803398 		Merionethshire 5Post-Medieval/Modern
 ME028
[127]
Capel Gallt-Coed Chapel Llanystumdwy 52°56′18″N 4°16′37″W / 52.9382°N 4.277°W / 52.9382; -4.277 (Capel Gallt-Coed),
SH470402 		Caernarvonshire 5Post-Medieval/Modern
 CN117
[128]
Afon Cynfal Deserted Rural Settlement Rectangular hut settlement Maentwrog 52°57′17″N 3°51′35″W / 52.9547°N 3.8597°W / 52.9547; -3.8597 (Afon Cynfal Deserted Rural Settlement),
SH751413 		Merionethshire 5Post-Medieval/Modern
 ME190
[129]
Afon Goch Deserted Rural Settlement Longhouse Maentwrog 52°57′00″N 3°51′30″W / 52.9501°N 3.8582°W / 52.9501; -3.8582 (Afon Goch Deserted Rural Settlement),
SH753407 		Merionethshire 5Post-Medieval/Modern
 ME191
[130]
Pont Minllyn, Afon Dyfi Pont Minllyn Property in the care of Cadw Bridge Mawddwy 52°42′38″N 3°41′21″W / 52.7106°N 3.6891°W / 52.7106; -3.6891 (Pont Minllyn),
SH859138 		Merionethshire 5Post-Medieval/Modern
 ME094
[131]
Dovey Bridge, Machynlleth Machynlleth Bridge Bridge Pennal, (also Machynlleth), (see also Powys) 52°36′02″N 3°51′21″W / 52.6005°N 3.8557°W / 52.6005; -3.8557 (Machynlleth Bridge),
SH744019 		Also known as Pont ar Dyfi Merionethshire 5Post-Medieval/Modern
 MG002
[132]
Cei Tyddyn Isa Quarry Penrhyndeudraeth 52°56′05″N 4°02′28″W / 52.9348°N 4.0412°W / 52.9348; -4.0412 (Cei Tyddyn Isa),
SH629395 		Merionethshire 5Post-Medieval/Modern
 ME108
[133]
Pen-y-Gwryd Pillboxes Pillbox Beddgelert 53°04′48″N 4°00′13″W / 53.0799°N 4.0036°W / 53.0799; -4.0036 (Pen-y-Gwryd Pillboxes),
SH659555 		Caernarvonshire 5.9Post-Medieval/Modern
 CN397
[134]
Dragon's teeth, Fairbourne beach defences Fairbourne Anti-invasion Defences Anti-invasion defence site Arthog 52°41′54″N 4°03′26″W / 52.6983°N 4.0571°W / 52.6983; -4.0571 (Fairbourne Anti-invasion Defences),
SH610131 		The tank traps stretch for some 3 kilometres (1.9 mi) along the beach Merionethshire 5.9Post Medieval/Modern
 ME252
[135]
Anti-invasion Defences 630m E of Cae'r-tyddyn Anti-tank Obstacle Brithdir and Llanfachreth 52°44′23″N 3°47′07″W / 52.7396°N 3.7854°W / 52.7396; -3.7854 (Anti-invasion Defences 630m E of Cae'r-tyddyn),
SH795172 		Merionethshire 5.9Post-Medieval/Modern
 ME250
[136]
Nant Ffrancon Anti-invasion Defences Anti-invasion defence site Llandygai, (also Capel Curig), (see also Conwy) 53°07′31″N 4°01′20″W / 53.1252°N 4.0222°W / 53.1252; -4.0222 (Nant Ffrancon Anti-invasion Defences),
SH647605 		Caernarvonshire 5.9Post-Medieval/Modern
 CN399
[137]
Anti-invasion Defences 2000m NE of Cwmrhwyddfor Farm Anti-tank Obstacle Llanfihangel-y-Pennant 52°42′13″N 3°50′57″W / 52.7036°N 3.8492°W / 52.7036; -3.8492 (Anti-invasion Defences 2000m NE of Cwmrhwyddfor Farm),
SH751133 		Merionethshire 5.9Post-Medieval/Modern
 ME251
[138]
Gwynedd
Enclosure & Settlement 400m East of Cyfannedd Fawr
Round Hut and Cairns on NW Slope of Braich Ddu
Pier Camp
Dinas Emrys Camp
Brithdir Roman Fort
Segontium Roman Site
Lower Roman Fort
Bryn-Glas Roman Signal Station
Llanfor Roman Fort and Camps (revealed by Aerial Photography)
Caer Gai Roman Site
Dinas y Prif Camp
Castell Tomen y Mur
Tomen y Mur
Cefn-Caer Roman Site
Roman Bath-House, Tremadoc
Roman Kilns 225m SE of Pen-y-Stryd
Dol-ddinas Roman Earthworks
Roman Practice Camp 440m WSW of Braich-ddu
Roman Practice Camps 190m W of Llyn Hiraethlyn
Roman Road Extending SE 650m from Llyn Hiraethlyn toward Glasgoed
The Senacus Stone (formerly in Tudweiliog, Dwyfer)
The Veracius Stone (formerly in Tudweiliog, Dwyfer)
Cross-Inscribed Stone in the Chapel, Bardsey Island
Inscribed Stone in the Chapel, Bardsey Island
Sundial in Clynnog Fawr Churchyard
Cross Inscribed Stone Near Capel Uchaf
Gesail Gyfarch Inscribed Stone
Llystyn Gwyn Inscribed Stone
Early Christian Inscribed Stone in the Churchyard, Llanaelhaearn
Part of Inscribed Stone Built into Wall of Churchyard
Inscribed Stone in St Cian's Churchyard, Llangian
Cross-Incised Stone in Llangybi Churchyard
Cross Slab Built into Farm Building Ty'n-y-Cae
Tymawr Cross-Incised Stone
Aber Castle Mound (Pen-y-Mwd)
Medieval Homestead 400m SE of Maes y Gaer
Enclosure & Associated Structures at Pen-y-Bryn
St Mary's Abbey, Bardsey Island
Site of St Merin's Church
Long Houses, Enclosures & Field Systems, Bardsey Island
Capel Anelog
Long House South of Talarfor
St Mary's Church
Llys Bradwen Medieval Site
Cyfannedd-Fach Homestead
Tomen y Bala Castle Mound
Ty'n Twr
Hafod-y-Wern Long Hut
Ystrad Rural Settlement
Cored Gwyrfai Fish Weir
Castell Cynfal, Bryn Crug
Caernarfon Town Wall
Caernarfon Castle
St Beuno's Well
Long Hut North of Cwm Farm
Criccieth Castle
Criccieth Castle, Outer Bank Defences
Dolbenmaen Castle Mound
Maes Coch Deserted Rural Settlement
Settlement & Fields Systems above Egryn Abbey
Eithin-Fynydd Platform House Settlement
Deserted Rural Settlement South of Ffridd Olchfa
Harlech Castle
Medieval Ecclesiastical Structure SE of Ty'n y Coed Cottage
Dolbadarn Castle
Cwm Brwynog Deserted Rural Settlement
Rectangular Earthwork 110m NW of Coed Ty Mawr
Castell Llanddeiniolen
Llys Dinorwig
Pen-Ucha'r-Llan Ringwork
Domen Ddreiniog
Cymer Abbey
Cymmer Castle
Castell y Bere
Pont Maesgwm Deserted Rural Settlement
Castell Gronw Castle Mound
Huts 90m N of Cil Twllan
Cwm Caseg Deserted Rural Settlement
Ty-Newydd Mound & Bailey Castle
Castell Carn Dochan
Tomen Fawr
Ffynnon Gybi
Penarth Fawr Medieval Hall
Tomen Las Castle Mound
Inscribed Stone in Llanfihangel Traethau Churchyard
Llidiart-Garw Platform House and Paddock
Castell Prysor
Bont-Newydd
Cwm Erch Copper Mine
Pen-y-Gwryd Pillboxes
Glasdir Copper and Gold Mine Mill
Pont y Cim
Water Balance Incline at Aberllefenni Slate Quarry
Gorseddau or Ynysypandy Slate Factory
Gilfach Copper Mine
Gorseddau Slate Quarry
Treforys Deserted Quarry Settlement
Pont Scethin
Pont Dol-y-Moch
Berth-Llwyd & Cefn Coch Gold Mining Complex
Hermon or Dolfwynog Copper/Gold Bog Kiln
Cwm Heisian West Lead and Gold Mine
Pont Llanbedr
Dinorwic Quarry: Hafod Owen Winding Engine, Locomotive Shed, Main Waterwheel and Housing
Dinorwic Quarry Barracks 'A' Incline
Vivian Slate Quarry, Inclines, Walia & associated structures
Dinorwic Quarry
Pont Fawr
Dinas Dinlle Seagull Trench
Slate Gwaliau at Felin Fawr, Penrhyn
Ogwen Fish Weir
Cegin Viaduct (Penrhyn Railroad)
Llanelltyd Bridge
Water Powered Chain Incline at Bryneglwys Slate Quarry
Alltwyllt Slate Quarry Incline
Rhosydd Incline, Drumhouse & Tramway
Corn Drying Kiln Near Carn-Gadell Uchaf
The Holyhead Road: the Ogwen Pass
Drws y Coed Copper Mine
Dorothea Quarry Beam Engine
Dorothea Quarry, Pyramids, Inclines, Mill & Winding Houses, etc
Pen-yr-Orsedd Quarry, Blondins and Associated Structures
Ty Mawr East Slate Quarry Winding Engine House
Blaen y Cae Slate Quarry
Cloddfa'r Lon Slate Quarry
Pont Tai-Hirion Old Bridge
Capel Gallt-Coed
Afon Cynfal Deserted Rural Settlement
Afon Goch Deserted Rural Settlement
Pont Minllyn
Machynlleth Bridge
Cei Tyddyn Isa
Fairbourne Anti-invasion Defences
Anti-invasion Defences 630m E of Cae'r-tyddyn
Nant Ffrancon Anti-invasion Defences
Anti-invasion Defences 2000m NE of Cwmrhwyddfor Farm
class=notpageimage|
Scheduled monuments in Gwynedd, Wales.
=Roman =Early Medieval
=Medieval =Post-Medieval/Modern
Map all coordinates using OpenStreetMap

Download coordinates as:

See also

References

  1. ^ Cadw: Ancient Monuments and Scheduling. Accessed 25 April 2013
  2. ^ Cadw will send their list as a spreadsheet, or other electronic formats, on request, as indicated at www.whatdotheyknow.com. This list uses information dated May 2012
  3. ^ coflein NPRN: 302834. GAT PRN: 4898. Cadw SAM: ME086: Enclosure & Settlement 400m East of Cyfannedd Fawr
  4. ^ coflein NPRN: 302835. GAT PRN: 4903. Cadw SAM: ME100: Round Hut and Cairns on NW Slope of Braich Ddu
  5. ^ coflein NPRN: 302712. GAT PRN: 2299. Cadw SAM: CN073: Pier Camp
  6. ^ coflein NPRN: 95284. GAT PRN: 1462. Cadw SAM: CN018: Dinas Emrys Camp
  7. ^ coflein NPRN: 95480. GAT PRN: 1546. Cadw SAM: ME080: Brithdir Roman Fort
  8. ^ coflein NPRN: 93511. GAT PRN: 3089. Cadw SAM: CN006: Segontium Roman Site
  9. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN094: Lower Roman Fort
  10. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN188: Bryn-Glas Roman Signal Station
  11. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME092: Llanfor Roman Fort and Camps (revealed by Aerial Photography)
  12. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME018: Caer Gai Roman Site
  13. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN030: Dinas y Prif Camp
  14. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME002: Castell Tomen y Mur
  15. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME078: Tomen y Mur
  16. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME009: Cefn-Caer Roman Site
  17. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN174: Roman Bath-House, Tremadoc
  18. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME071: Roman Kilns 225m SE of Pen-y-Stryd
  19. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME077: Dol-ddinas Roman Earthworks
  20. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME260: Roman Practice Camp 440m WSW of Braich-ddu
  21. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME261: Roman Practice Camps 190m W of Llyn Hiraethlyn
  22. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME262: Roman Road Extending SE 650m from Llyn Hiraethlyn toward Glasgoed
  23. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN089: The Senacus Stone (formerly in Tudweiliog, Dwyfer)
  24. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN090: The Veracius Stone (formerly in Tudweiliog, Dwyfer)
  25. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN141: Cross-Inscribed Stone in the Chapel, Bardsey Island
  26. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN142: Inscribed Stone in the Chapel, Bardsey Island
  27. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN062: Sundial in Clynnog Fawr Churchyard
  28. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN213: Cross Inscribed Stone Near Capel Uchaf
  29. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN019: Gesail Gyfarch Inscribed Stone
  30. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN021: Llystyn Gwyn Inscribed Stone
  31. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN084: Early Christian Inscribed Stone in the Churchyard, Llanaelhaearn
  32. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN085: Part of Inscribed Stone Built into Wall of Churchyard
  33. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN087: Inscribed Stone in St Cian's Churchyard, Llangian
  34. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN100: Cross-Incised Stone in Llangybi Churchyard
  35. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN180: Cross Slab Built into Farm Building Ty'n-y-Cae
  36. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN101: Tymawr Cross-Incised Stone
  37. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN007: Aber Castle Mound (Pen-y-Mwd)
  38. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN137: Medieval Homestead 400m SE of Maes y Gaer
  39. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN218: Enclosure & Associated Structures at Pen-y-Bryn
  40. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN068: St Mary's Abbey, Bardsey Island
  41. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN171: Site of St Merin's Church
  42. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN186: Long Houses, Enclosures & Field Systems, Bardsey Island
  43. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN220: Capel Anelog
  44. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN318: Long House South of Talarfor
  45. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN381: St Mary's Church
  46. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME022: Llys Bradwen Medieval Site
  47. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME101: Cyfannedd-Fach Homestead
  48. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME016: Tomen y Bala Castle Mound
  49. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN219: Ty'n Twr
  50. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN307: Hafod-y-Wern Long Hut
  51. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN316: Ystrad Rural Settlement
  52. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN334: Cored Gwyrfai Fish Weir
  53. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME121: Castell Cynfal, Bryn Crug
  54. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN034: Caernarfon Town Wall
  55. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN079: Caernarfon Castle
  56. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN091: St Beuno's Well
  57. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN309: Long Hut North of Cwm Farm
  58. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN015: Criccieth Castle
  59. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN173: Criccieth Castle, Outer Bank Defences
  60. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN063: Dolbenmaen Castle Mound
  61. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME196: Maes Coch Deserted Rural Settlement
  62. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME122: Settlement & Fields Systems above Egryn Abbey
  63. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME202: Eithin-Fynydd Platform House Settlement
  64. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME203: Deserted Rural Settlement South of Ffridd Olchfa
  65. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME044: Harlech Castle
  66. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME249: Medieval Ecclesiastical Structure SE of Ty'n y Coed Cottage
  67. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN066: Dolbadarn Castle
  68. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN315: Cwm Brwynog Deserted Rural Settlement
  69. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN156: Rectangular Earthwork 110m NW of Coed Ty Mawr
  70. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN197: Castell Llanddeiniolen
  71. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN223: Llys Dinorwig
  72. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME042: Pen-Ucha'r-Llan Ringwork
  73. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME054: Domen Ddreiniog
  74. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME001: Cymer Abbey
  75. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME150: Cymmer Castle
  76. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME023: Castell y Bere
  77. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME193: Pont Maesgwm Deserted Rural Settlement
  78. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME067: Castell Gronw Castle Mound
  79. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN144: Huts 90m N of Cil Twllan
  80. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN314: Cwm Caseg Deserted Rural Settlement
  81. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN096: Ty-Newydd Mound & Bailey Castle
  82. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME049: Castell Carn Dochan
  83. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN031: Tomen Fawr
  84. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN037: Ffynnon Gybi
  85. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN086: Penarth Fawr Medieval Hall
  86. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME043: Tomen Las Castle Mound
  87. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME050: Inscribed Stone in Llanfihangel Traethau Churchyard
  88. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME112: Llidiart-Garw Platform House and Paddock
  89. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME045: Castell Prysor
  90. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN061: Bont-Newydd
  91. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN193: Cwm Erch Copper Mine
  92. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME206: Glasdir Copper and Gold Mine Mill
  93. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN053: Pont y Cim
  94. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME185: Water Balance Incline at Aberllefenni Slate Quarry
  95. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN160: Gorseddau or Ynysypandy Slate Factory
  96. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN170: Gilfach Copper Mine
  97. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN303: Gorseddau Slate Quarry
  98. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN321: Treforys Deserted Quarry Settlement
  99. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME126: Pont Scethin
  100. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME039: Pont Dol-y-Moch
  101. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME119: Berth-Llwyd & Cefn Coch Gold Mining Complex
  102. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME198: Hermon or Dolfwynog Copper/Gold Bog Kiln
  103. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME204: Cwm Heisian West Lead and Gold Mine
  104. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME026: Pont Llanbedr
  105. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN163: Dinorwic Quarry: Hafod Owen Winding Engine, Locomotive Shed, Main Waterwheel and Housing
  106. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN177: Dinorwic Quarry Barracks 'A' Incline
  107. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN198: Vivian Slate Quarry, Inclines, Walia & associated structures
  108. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN337: Dinorwic Quarry
  109. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME027: Pont Fawr
  110. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN396: Dinas Dinlle Seagull Trench
  111. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN297: Slate Gwaliau at Felin Fawr, Penrhyn
  112. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN335: Ogwen Fish Weir
  113. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN380: Cegin Viaduct (Penrhyn Railroad)
  114. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME006: Llanelltyd Bridge
  115. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME186: Water Powered Chain Incline at Bryneglwys Slate Quarry
  116. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME205: Alltwyllt Slate Quarry Incline
  117. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME142: Rhosydd Incline, Drumhouse & Tramway
  118. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME116: Corn Drying Kiln Near Carn-Gadell Uchaf
  119. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN338: The Holyhead Road: the Ogwen Pass
  120. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN162: Drws y Coed Copper Mine
  121. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN165: Dorothea Quarry Beam Engine
  122. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN199: Dorothea Quarry, Pyramids, Inclines, Mill & Winding Houses, etc
  123. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN208: Pen-yr-Orsedd Quarry, Blondins and Associated Structures
  124. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN300: Ty Mawr East Slate Quarry Winding Engine House
  125. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN301: Blaen y Cae Slate Quarry
  126. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN302: Cloddfa'r Lon Slate Quarry
  127. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME028: Pont Tai-Hirion Old Bridge
  128. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN117: Capel Gallt-Coed
  129. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME190: Afon Cynfal Deserted Rural Settlement
  130. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME191: Afon Goch Deserted Rural Settlement
  131. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME094: Pont Minllyn
  132. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: MG002: Machynlleth Bridge
  133. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME108: Cei Tyddyn Isa
  134. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN397: Pen-y-Gwryd Pillboxes
  135. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME252: Fairbourne Anti-invasion Defences
  136. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME250: Anti-invasion Defences 630m E of Cae'r-tyddyn
  137. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: CN399: Nant Ffrancon Anti-invasion Defences
  138. ^ coflein NPRN: not yet identified. GAT PRN not yet identified. Cadw SAM: ME251: Anti-invasion Defences 2000m NE of Cwmrhwyddfor Farm