• Tagged abandoned, archaeological, architecture, coastal fortress, coral reefs, diving, DRTO, Dry Tortugas, Dry Tortugas National Park, ecosystem, environment, Florida, fort, Fort Jefferson, Garden Key, ghost town, island, islands, Key West, lighthouse, Loggerhead Key, marine life, National Park, nature, sea, shipwreck, shipwreck diving, snorkel, sunken treasure, treasure hunting, wreck diving

About 70 miles west of Key West, Florida, lies Dry Tortugas National Park which is world-renowned for picturesque blue sea waters, white sands, brightly colorful coral reefs, abundant marine life, and legends of shipwrecks and sunken treasures. There are seven small islands in the 100-square mile park, but it is mostly open water that is accessible only by boat or seaplane. Dry Tortugas is also famous as the home of magnificent and historic Fort Jefferson, the largest masonry building in the Western Hemisphere. Though it was not finished, the fort has more than 16 million bricks that make up the massive 45-foot-high, three-level hexagon, coastal fortress that has 2,000 architecturally beautiful arches. [44 Fabulous Photos]