In the middle of the mouth of Tampa Bay lies the small (350 acres), largely unspoiled but critically eroding island Egmont Key, now a state park, national wildlife refuge, national historic site, and bird sanctuary. On the island are the ruins of Fort De Soto's sister fortification, Fort Dade, built during the Spanish-American War to protect Tampa Bay. The primary inhabitants of the less-than-2-mile-long island are the threatened gopher tortoise and box turtles. The only way to get here is by boat—you can catch a ferry from Fort De Soto, among other places. Nature lovers will find the trip well worth it—the beach here is excellent for shelling, secluded beach bathing, wildlife viewing, and snorkeling. Hubbard's Marina operates a ferry to Egmont Key from Fort DeSoto most days.
St. Petersburg, Florida, United States