9.
John B. Stetson Mansion 
DeLand, Fla.
$3.2 million


John B. Stetson, the man who gave us the iconic Stetson cowboy hat, built Florida's first and only “Gilded Age” mansion in 1886, which became his winter retreat from Philadelphia for 20 years. “He was Florida’s first snowbird,” says owner Michael Solari. The opulent mansion was one of the first homes in the world designed and built with electricity, courtesy of friend Thomas Edison. Among its visitors were President Grover Cleveland, Henry Flagler, Louis Tiffany and the king and queen of England. Forgotten for 100 years, owner Solari said he had no idea what he was buying in 2005. He and his partner performed a $2.5 million renovation on the 3-acre estate, making it suitable for commercial or residential use.