This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.

The second-deepest known cave on Earth, hidden in an extremely remote mountain region.

Aliens and monsters lurk inside this museum dedicated to one man's lifelong adoration of all things sci-fi.

In the middle of a barren moorland, the remnants of a lost British Space Age stand like a 20th-century Stonehenge.

A circle stone within a stone circle.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A magical museum of fairy tale treasures near Cyprus' buffer zone.

A wellspring of natural Viagra found in Bosnia.

Relics from as far back as the 16th century are on display in a city known for its playing card industry.

The Devil’s own choice when he needs a drink in Brussels.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Rumors of the occult haunt this upscale 1920s hotel.

The oldest continuously operating pharmacy in Europe.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A ruined castle has more than its fair share of legends and ghost stories.

This tangled English forest looks like something right out of a fairytale.

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

This historic Benedictine monastery brews a booze so toxic that it has often been blamed almost singularly for Scottish hooliganism.

A open air theatre built on a cliff by an eccentric British woman.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.