One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

The morbid items in this small and hidden museum are not for the weak stomached.

Commonly acknowledged as the only public monument to the Devil himself.

This lucky bronze frog was gifted to Madrid by a casino.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

Once the home of a hermetic monk, this cave now houses a small church.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

A museum in the childhood house of a medical pioneer.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Beautiful antiques and obscure engineering artifacts trace the evolution of phones from rare luxuries to ubiquitous.

This building has survived for more than a century and remains virtually untouched.

A fake Transylvanian castle houses a cathedral of antlers.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Frida Kahlo's childhood home, now a museum of her life and works.

The most magnificent bottle house in a town strangely full of them.

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

Nevada's largest cactus collection stands outside a candy mogul's small factory.

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

Beneath a Virginia City bar is the entrance to an abandoned gold mine.

Eulogizing an unknown man's unusual demise.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

There's nothing creepier than a cemetery next to a clown motel.