This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

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

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Northern Ireland's Brobdingnagian stepping stones.

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

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

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Tubing through a cave lit with glowworms is a magical underground experience.

When you get to Magnetic Hill park near the sign, put your vehicle in neutral gear, and watch it roll uphill...

A stray meteor left this picturesque hole in the Australian outback.

A sparkling sandstone cliffside that's worth a visit while it still exists.

One of the best beaches in the entire world.

Occult books, tarot, oddities.

An Australian lake whose pink hue defies scientific explanation.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.