The narrow passages will challenge even the bravest driver.

This modern labyrinth lies in the shadow of a ruined medieval castle.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

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

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

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

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

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

This massive subterranean fissure is known as the "underground Grand Canyon."

This one-time health resort was used by aristocrats around the world.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

"All Mountains - All The Time."

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

A little-known hot spring haven right below the highway.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.