Abandoned Florida Fort Jefferson; Work began on this fascinating, unfinished coastal fort in 1846 and the building is still the largest masonry structure in the Western Hemisphere, comprising of over 16 million bricks. part of Dry Tortugas National Park and can only be reached by seaplane or boat.
A Florida alligator in the Everglades. Photograph: Alamy. Take the road from Homestead to Flamingo. The main road through Everglades national park has been called "38 miles of nothing", but that's way off the mark. The road passes through every major natural habitat, including fire-shaped pinelands, sawgrass marshes, cypress domes, sloughs and mangroves before ending at the campground on Florida Bay. Drive slowly, stop often, and look around! : )
Dry Tortugas National Park is one of the least visited national parks in the United States, with only 60,000 visitors per year. This is primarily due to its remote location 70 miles west of Key West. It is also the most aquatic of all the US national parks with 98% of the park consisting of water. The 2% of the park which is land is largely taken up by Fort Jefferson.