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

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

Spend the night in this formerly abandoned traditional Scottish village.

The longest hedge maze in the world.

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

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

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Rebuilt remains of a temple to Roman god Mithras.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

Northern Ireland's Brobdingnagian stepping stones.

An unusual round church in London with a Templar past.

One part local history, 99 parts gruesome haunted house.

Eighty million natural history specimens call this gargantuan museum home.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

The atmospheric road was never meant to be so creepy.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

A 30-acre garden inspired by the principles of modern physics.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.