The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The island residents are known for taking their quirky sense of humor with them to the grave.

Over 12,500 words are scrawled across each room of this historic plantation house and no one knows why.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

An underwater statue of Christ blesses the depths off Key Largo.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

It's a pretty creepy lock-up.

A monument celebrating the idea of reaching inaccessible places.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Located within a historic park, the beacon is the oldest standing structure in Miami.

Former villa and estate of James Deering developed to preserve native tropical forests.

A community of collapsing homes more than a mile out from the Florida coast.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.