A seemingly endless landscape of pure salt stretches far across Bolivia.

Beautiful mostly-abandoned town only accessible by sea-worthy boat or plane.

A city built from mud and known as the "Manhattan of the desert."

One of the most remote and isolated villages on the Arabian Peninsula.

Yemen's "Stone Palace" looks like it was carved right out of the tall stone column on which it is built.

A mesmerizing reservoir nestled at the heart of a pre-Islamic Yemeni village.

The most alien-looking place on Earth.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A century-old tradition has culminated in a small but singular collection of feline effigies.

This disused Cold War bunker has been restored to all of its early 60s glory.

This network of narrow, medieval passages has the most delightful name.

One of the shortest streets in York has an especially odd name.

Follow the original medieval paths that wind through this intriguing section of the city.

A toxic ghost town sitting atop a massive coal fire.

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.

Plenty of old carney magic still haunts this photogenic amusement park.

This former coal mine has been turned into a sprawling modern art complex.

The legendary building that needed ghostly approval before being built.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

French scientists make up the majority of the few humans to occupy this remote island in the extreme southern Indian Ocean.