The entire park is about 100 square miles and mostly underwater, but Fort Jefferson located on Garden Key has plenty of space for fun and exploration. In the waters surrounding Garden Key you will find a vibrant intact coral reef system, tons of colorful tropical fish, many species of birds, and of course Loggerhead and Green Sea Turtles! On land you will be able to explore Fort Jefferson with one of Yankee Freedom’s naturalists, and learn about its history before, during, and after the civil war. Fort Jefferson was built in 1846 and two historic lighthouses, which you can also visit, guard its reefs. The Dry Tortugas is also home to over 200 shipwrecks, so if you happen to discover a washed-up artifact, don’t touch it and remember to tell a park ranger. Your discovery may make it to your local museum!