Seven Mile Bridge
One of the world's longest bridges when it was built. Walk the old span to Pigeon Key.

A road that island-hops 113 miles across the sea, from mainland Florida to Key West, over 42 bridges.
The Overseas Highway follows Henry Flagler's old railway, destroyed by a hurricane in 1935. It's among America's most unusual drives, crossing turquoise water with the Atlantic on one side and the Gulf on the other.
The Seven Mile Bridge is the highlight, with the old bridge beside it open to walkers.
One of the world's longest bridges when it was built. Walk the old span to Pigeon Key.
America's first undersea park, in Key Largo.
White sand and views of the old rail bridge.
The end of US 1, in Key West.
Stay in Key Largo, Islamorada or Key West.
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Must-See
Must-SeeTurquoise water, pastel Art Deco hotels and Cuban coffee, with the Everglades an hour away.
Worth a DetourA vast slow river of sawgrass where alligators, manatees and wading birds are easy to see from boardwalks.
Last checked 2026-11-01. Part of the Florida list.