Three Sisters Springs
Crystal River, FL · Nature Coast$$
A 1,300-foot boardwalk circles Three Sisters Springs in Crystal River, where in winter you look down on some of the 600-plus manatees that come into Kings Bay. You get to the…

Photo: Florida State Parks / Courtesy of Florida State Parks · source
Mermaids have performed underwater at Weeki Wachee Springs in Spring Hill since 1947, and you watch the daily shows through windows below the spring's surface. Newton Perry, who opened the park, built the act around breathing from air hoses. The riverboat cruise is the park's own, but kayaks come from Weeki Fresh Water Adventures, a separate outfitter next door.
24 placesEvery spring on this list stays between 68 and 74 degrees all year, and from mid-November through March the manatees move into Blue Spring and Three Sisters. You watch them from the boardwalk.
44 placesThe big Orlando parks are all here, for the first trip. So is the rest of the state, for the one after that.