What began as an art installation is now the private drinkhaüs for a brewery's employees.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

The historic home still shows the scars from a little run-in with the British in 1813.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

A grotesque Fiji merman dwells within this traditional Dutch-style building.

Designed to commemorate the founding of the first settlement in Delaware.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A hands-on traveling collection of the innovative devices of yesteryear.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

During World War II, the Nazis repurposed this beer cellar to store stolen artwork.

This historic toy museum brings a little whimsy to a city not usually remembered for such things.

This lurid German fountain plots the sad course of marriage from dating to death.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.

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

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A sprawling network of century-old subterranean catacombs lies beneath a nondescript suburban home.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.

Take a dip beneath the stalactites in this amazing cenote.

This popular cave pool is truly magical, despite the crowds.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.