The coral reef that lies off Key Largo forms part of the Florida Reef tract, the largest living coral reef system in North American waters and the third-largest barrier reef in the world. It protects almost 200 miles of coastline, descending to depth..

Encompassing 100sq mi in the Gulf of Mexico, the park protects the small cluster of reef islands known as the Dry Tortugas. One of these, Garden Key, is the site of Fort Jefferson, the largest coastal stronghold built by the US in the 19C. The half- ..

One of the largest National Historic Districts on the National Register, Old Town boasts diverse architecture, from simple wood-frame vernacular Conch houses and gingerbread-trimmed Victorians to imported Bahama houses and gracious Classical Revival ..