A subterranean playground in an abandoned slate mine.

At the United Kingdom's only residential library you can sleep among the books.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

These mysterious mazes carved on the rock may be up to 4,000 years old.

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.

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

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

A unique waterfall that some believe attracts the fairfolk.

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

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

This tribute to Sunderland's mining past stands outside the home of its football club.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

This gorgeous space is England's largest independent library outside of London.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

When the public was consulted about a new piece of street art, they naturally asked for an enormous metal dragon.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

The storied English village that pretended to be insane inspired NYC's nickname and the fictional namesake in the DC Comics universe.