The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

Eyam took steps to quarantine themselves and keep the plague from spreading.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

This crumbling folly looks like an enchanted left over from Middle Earth.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A fantastic castle rumored to be the birthplace of King Arthur.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

These fantastically named natural pools look like something out of a Scottish myth.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

The largest greenhouse in the world is home to over one million types of plants.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

A fiery crater has been burning in the Karakum Desert since 1971.

360° views of the city plus five floors of optical illusions and hands-on science.

Northern Ireland's Brobdingnagian stepping stones.

A 30-acre garden inspired by the principles of modern physics.

The atmospheric road was never meant to be so creepy.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

The world's largest collection of witchcraft regalia.

The sign at the garden gate reads: "These Plants Can Kill."