A 16th-century horror show built in a lovely Italian garden.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

Four metal statues of massive animal penises stand outside the university's Animal Sciences building.

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

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

In a city crazy for seashells this museum educates and amazes visitors using the wonder of cast-off exoskeletons.

Just below the surface, shrimp are producing temperatures hotter than the sun.

Leave it to Key West to drop a real-live drag queen instead of a ball to mark the arrival of the New Year.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

A historic presidential getaway on the continental United States' southernmost island.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

The haunting remains of a failed housing development can still be found behind the big box stores that were to anchor them.

Where serial killer Aileen Wuornos drank her last beer.

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

A vast array of tropical plants collected by a vacationing couple.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

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

A building so large that it has its own weather.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.