
11. South Carolina: The Calhoun Mansion
The Williams Mansion (formerly called the Calhoun Mansion) is a Victorian house in Charleston, South Carolina. The house was built in 1875 and 1876 for George W. Williams, a businessman, according to plans drawn by W.P. Russell. The 24,000-square-foot house has thirty main rooms and many more smaller rooms. The main hall is 50 feet long and 14 feet wide.

It opened as a hotel starting in 1914. Attorney Gedney Howe and his wife, Patricia, bought the house in 1976 and undertook a restoration. In 2020, the home officially returned to its original name, the Williams Mansion. The owner stated he wished to avoid any implication that John C. Calhoun lived in the home. (via Calhoun Mansion)