A striking 12th-century-style castle built on the edge of a cliff.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

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

Ruins of a German Castle on top of a towering stone pillar.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The fairy tale castle of the "fairy-tale king."

These picturesque ruins crumble beautifully into the ocean.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The legend says that this English rock formation was once a hunter who was turned to stone by annoyed witches.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

A holy well supposedly infused with a saint's spirit flows within this quaint chapel.

Now nearly dry, this lake is said to be the ancient home of the Lady of the Lake, and was once thought to be bottomless.

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

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

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

The worst flood disaster in Welsh history might have been a lot worse if it had not happened on movie night.

A Neolithic burial tomb connected with a colorful array of legends.

An abandoned quarrying village turned commune is now a hub for learning the Welsh language.

The only medieval bridge in Britain with its defensive tower still in tact.

The castle still holds traces of the abandoned Roman fort it was built atop.

The world’s only museum dedicated to baked beans.