This mansion in Coral Gables, FL was used as a base of operations by the CIA in their campaign to overthrow Fidel Castro. The historic 1937 house was even mentioned by Norman Mailer in Harlot’s Ghost; it is “a nice, cool, handsome house when all is said.” $22 million will purchase the home, with its boathouses—as well as an island outpost (via MiamiHerald.com).