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Right in the center of the historic district action, the Key West Aquarium is tiny but its historic building and informative tours make it a fun and appealing stop.

I visited Key West many times before I got around to the aquarium, but I recommend it if you set your expectations correctly.

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Deering Estate is a serene spot in South Dade offering sweeping views of Biscayne Bay, a fascinating tour of a castle-like home and boat tours of Biscayne National Park. In September and October, there will be weekly historic ghost tours on Thursday evenings.

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Coral Castle is a 100-year-old site made of 30-ton blocks of limestone somehow arranged by a lovesick eccentric into a Stonehenge-like work of art.

Like a lot of original Florida tourist attractions, it can be corny, playing up a mystical angle. But it is also listed on the National Register of Historic Sites and is strange and wonderful in its own way.

Read More about Coral Castle: 15 things to amaze you at mysterious ‘work of art’ in Homestead