To visit the tiny island of Cabbage Key is to travel back to the earliest days of Florida tourism. Its dominant building is the Cabbage Key Inn (1938), built for the son of mystery writer Mary Roberts Rinehart. The house was turned into an inn in the early 1940s. After breakfast, don't forget to walk the half-mile nature trail through a dense understory of mangroves, strangler figs and sea grapes. A 30ft water tower commands a fine view of the surrounding islands.