Lewis was appointed as director-general of the Tennessee Centennial Exposition, held a year late in 1897.[5] In particular, he was known to have suggested that a reproduction of the Greek Parthenon be constructed as the centerpiece of Nashville's exhibit and the Exposition. Nashville was nicknamed the "Athens of the South." Its rival Memphis constructed a reproduction of a pyramid. Both exhibits were lit at night and were next to each other on the shore of Lake Watauga.
Lewis supported the retention of the popular Parthenon after the exposition closed. (In the 1920s, it was reconstructed in permanent materials and adapted for use as an art museum in the park.)[7]
Lewis was the first vice president of the Nashville Art Association. He was a member of the Park Commission for the City of Nashville from 1910-1912.[5] In 1916, a lawsuit against city government called him as a witness. His and other testimony showed he had hired his son, his brother, his niece, his second nephew and the latter's son to the park commission while he served on it. This was considered illegal nepotism and patronage. He said some appointments were made by others and he had not been aware.[10]
Death
Lewis died on February 13, 1917, in Nashville.[6] He was buried at Mount Olivet Cemetery,[6] in a mausoleum shaped like an Egyptian pyramid, guarded by two sphinxes.[5]