The Austria–Italy border is a 404 km (251 mi)[1] land border along the Alps between the Republic of Italy and the Republic of Austria. A border has existed since 1861, but the current one only since 1919. It has been an EU internal border since 1 January 1995. The border was last changed in 1947.[2] A large older change was in 1919 when South Tyrol was made part of Italy instead of Austria.