The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

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

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

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

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

The stately remains of Llywelyn the Great's mighty fortress.

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

This short bridge is the only thing connecting a tiny Irish island to the mainland.

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

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

England's most notorious suicide spot.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

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

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

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

Repository for more than 22 million pickled specimens.

A unique waterfall that some believe attracts the fairfolk.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

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

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

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