The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Electrical pylon in the shape of Disney's beloved mouse.

Mariners once used this prehistoric landfill as a navigational landmark.

A lion given to the prime minister somehow got stuffed and sent to Florida.

One of the largest Native American shell middens stands 30 feet tall.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

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

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

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

The third tallest lighthouse in America once guided author Stephen Crane to safety.

A building so large that it has its own weather.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

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

It's a pretty creepy lock-up.

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

A tribute to Ponce de Leon's supposed quest for eternal youth.

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.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.