Old Northeast, St. Petersburg, Florida
Along the bay and the bayou are grand mansions built during Florida's land boom of the 1920s. More-modest houses, interspersed with apartment buildings, populate the tree-lined, red-brick streets. Styles include Craftsman, Mediterranean Revival, and Italian Renaissance, with prices ranging from $90,000 to $400,000.
Shown: The Prairie-style foursquare is just one of many architectural styles found here.