Dry Tortugas National Park

"These seven islands 70 miles west of Key West are a snorkeler's dream."

"This park, 70 miles off the shores of Key West, consists of seven small islands." Full review

"If you can't make it out to see Fort Jefferson in Dry Tortugas National Park, this is the next best thing. Opened in 2013 by the national park's official ferry commissioner, this free..." Full review

"If you've got enough time for a day trip, hop the ferry to the Dry Tortugas National Park; the seven islands, 70 miles west of Key West, are like a trip back in time to the earliest days of the Keys." Full review

"It's 99% underwater, which means the beaches it does have across its seven islands provide a stunning contrast between the pristine turquoise of the ocean and the sun-bleached white of the sand."

"Dry Tortugas National Park is actually one of the country's least-visited national parks. This beach is only accessible by boat or plane, but the difficult commute is worth the trouble...."

"Dry Tortugas National Park comprises a cluster of seven small islands, but most of the 100-square-mile park is water — mesmerizingly blue, crystal-clear water worthy of your wildest tropical dreams."

"It rewards you for your effort in getting there with amazing snorkeling amid coral reefs full of marine life. You'll also get to tour a beautifully preserved 19th-century brick fort" Full review

"Composed mostly of open seas and seven small islands. Garden Key is home to 19th century Fort Jefferson, its brick walls starkly contrasting the dazzling blue waters around it. "

"70 miles from the mainland and 99 percent underwater. Its isolated and hard-to-reach location is part of the appeal, as are its incredible blue waters and historic fort."