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The largest all-masonry fort in the United States,
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The largest all-masonry fort in the United States, Fort Jefferson, lies on a island in the Dry Tortugas group 70 miles west of Key West. The bastion was used as a federal prison in and after the Civil War and now is part of Dry Tortugas National Park. (Credit: National Parks Service)

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Historic Florida

With Florida celebrating its 500th anniversary, here are some historic sites to visit.

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