A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

A tiny, hidden alleyway dedicated to the father of meteorology.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

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 circle stone within a stone circle.

Britain's only artificial surfing lake is nestled in the beautiful mountains of Wales.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

This South London cemetery holds the remains of more than 15,000 people.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Pop culture has helped to keep this iconic British building from being destroyed.

The monster at the center of the Darwin Center Spirit Collection.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A repurposed railway tunnel with otherworldly acoustic characteristics.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

One family's environment-friendly hobbit-house in Wales.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The last four extravagant street signs of London's historic banking street.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

A tongue-in-cheek arcade where the games are based on everyday life.