This cramped crevasse saw the entire population of its island suffocated inside its depths.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This series of Scottish caves has no clear purpose other than baffling historians.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

A pagan tradition of draping trees with rags eerily lives on.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Twisted buildings adorn the banks of the Rhine river.

Striking occult iconography on a medieval German church.

This 600-year-old home seems to defy physics.

This hilarious English intersection is an automotive whirlpool.

This conical hill was built as a testing ground for an engineer known as the Glider King.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

An electrifying collection of gadgets and literature from the 16th through 20th centuries.

The illuminated falls are a gem in North Cascades National Park.

An ice cream parlor chain that caters to vegans and pinball fans equally.

A whimsical village of unique treehouses resides in a Washington forest.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

An extraordinary mixture of natural beauty and man-made phenomena.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

Make your reservation to have coffee with some kitties.