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Dry Tortugas National Park is a national park in the United States that encompasses the Dry Tortugas, a group of seven small islands in the Gulf of Mexico. The park is located about 70 miles (110 km) west of Key West, Florida. 

The Park is home to Fort Jefferson, a large 19th-century fort that was used as a prison during the American Civil War. The fort is now a popular tourist destination, and visitors can take tours, go swimming, or explore the many rooms and corridors of the fort. 

Dry Tortugas is also a popular spot for bird watching, as the islands are home to a variety of bird species. Visitors can take guided bird walks, or go on their own to explore the islands and look for birds.​​