Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

Museum celebrating the history of computers, especially their role in codebreaking.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

Scotland's only funicular railway is also the United Kingdom's highest.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

One man spent 10 years building a spectacular section of road because no one else would.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

Legend says this cave housed a 16th-century cannibal and his family of 48.

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

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

A famous burial ground with a history both grim and literary.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

A subterranean playground in an abandoned slate mine.

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

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

Surreal riveted sea forts once protected the Kent shores from German attack.

A fantastic castle rumored to be the birthplace of King Arthur.

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

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.