0206 USA - Florida

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The Florida Keys are a coral cay archipelago in the southeast United States. It is the third largest coral reef in the world.

There are 42 bridges connecting the islands of the Florida Keys. The longest is the famous Seven-mile Bridge: it connects Knight's Key (part of the city of Marathon, Florida) in the Middle Keys to Little Duck Key in the Lower Keys. 

Three of the Keys bridges have been named National Historic Sites: old Seven Mile, Bahia Honda and Long Key.