Sombrero Key
Sombrero Key is marked by a red lighthouse from the 1850s There is a string of these lighthouses down the Florida Keys, and this is the biggest one at 150 feet tall. You can always find Sombrero Key, as the lighthouse is anchored to it. The Army Corps of Engineers built all of the Florida Keys lighthouses this way.
Sombrero Key is popular with everyone because of The Arch, an underwater coral formation through which you can swim and take awesome photos. It’s located eight miles off from Key Colony beach and easy to find, of course. Depths range to about 30 feet, so good for snorkelers, too. It’s a novice level scuba dive. There are mooring buoys and lots and lots of coral. No fishing, as Sombrero Key is a Sanctuary Preservation Area (SPA) and it’s heavily enforced.
