Qualla: Dry Tortugas National Park

Dry Tortugas National Park: Introduction

Mon, 23 Feb 2026 00:00:00 GMT

Photo credit Dpalma01, CC BY-SA 4.0. Sixteen million bricks, stacked into a hexagonal fortress on a speck of coral in the Gulf of Mexico, seventy miles from the nearest road. Fort Jefferson was never finished and never fired a shot in anger, yet it became one of the most infamous prisons in American history. The islands surrounding it, the Dry Tortugas, carry a name that is the second oldest surviving European place-name in the United States, given by Juan Ponce de Leon in 1513 after he caught 160 sea turtles here. He called them the Tortugas. They are called Dry because there is no fresh water. Today, the national park that protects these seven shifting islands is more than 99 percent water, accessible only by seaplane or boat, and averages just 63,000 visitors a year. Most of them come for the fort. They stay for everything else.

Image: Dpalma01 | CC BY-SA 4.0

Dry Tortugas National Park: The Fortress That Swallowed an Island

Mon, 23 Feb 2026 00:00:00 GMT

Photo credit RATHERBAKEWELL, CC BY-SA 4.0. After the United States acquired Florida from Spain in 1819, military planners recognized the Dry Tortugas as a strategic chokepoint controlling the Straits of Florida and the Gulf of Mexico. Construction of Fort Jefferson began on Garden Key, and by 1860 the work was half comple...

Image: RATHERBAKEWELL | CC BY-SA 4.0

Dry Tortugas National Park: The Doctor's Redemption

Mon, 23 Feb 2026 00:00:00 GMT

Photo credit NPS Photo, Public domain. In 1865, Dr. Samuel Mudd set the broken leg of a man who arrived at his Maryland farm in the middle of the night. That man was John Wilkes Booth, fleeing after assassinating President Abraham Lincoln. Mudd was convicted of conspiracy by a military commission, narrowly escaping th...

Image: NPS Photo | Public domain

Dry Tortugas National Park: Treasure and Wreckage

Mon, 23 Feb 2026 00:00:00 GMT

Photo credit Alexander Vasenin, CC BY-SA 3.0. The waters around the Dry Tortugas are a graveyard. Shipwrecks dating from the seventeenth century litter the reefs, victims of hurricanes, shallow coral, and the treacherous currents of the Florida Straits. The most famous is the Nuestra Senora de Atocha, a Spanish galleon drive...

Image: Alexander Vasenin | CC BY-SA 3.0

Dry Tortugas National Park: Wings Over the Water

Mon, 23 Feb 2026 00:00:00 GMT

Photo credit Natgsimons, CC BY-SA 4.0. The Dry Tortugas host the only nesting colonies of sooty terns, brown noddies, magnificent frigatebirds, and masked boobies in the contiguous United States. The park's official bird list counts 299 species. Each spring, particularly in April, the islands become a waystation for m...

Image: Natgsimons | CC BY-SA 4.0

Dry Tortugas National Park: Islands That Disappear

Mon, 23 Feb 2026 00:00:00 GMT

Photo credit Jstuby, CC0. The Dry Tortugas are not fixed. There are nominally seven islands, but there have been as many as eleven over the past two centuries, and some of them vanish. Middle Key disappears for weeks or months at a time beneath the tides, only to resurface. Bird Key, once the site of Unio...

Image: Jstuby | CC0