Fort Jefferson, located in the Dry Tortugas National Park off the coast of Key West, Florida, is a historic military fort known for its impressive architecture and remote island setting. Visitors can explore the fort's grounds, snorkel in the crystal-clear waters surrounding the island, and learn about its fascinating history as a Civil War-era fortress. With its pristine beaches and abundant marine life, Fort Jefferson offers a unique and unforgettable vacation experience for those seeking adventure and relaxation in a secluded tropical paradise.