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

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

This tangled English forest looks like something right out of a fairytale.

The longest hedge maze in the world.

Northern Ireland's Brobdingnagian stepping stones.

Spend the night in this formerly abandoned traditional Scottish village.

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

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

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

360° views of the city plus five floors of optical illusions and hands-on science.

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

The sign at the garden gate reads: "These Plants Can Kill."

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

These fantastically named natural pools look like something out of a Scottish myth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Ruins of a 10th century church tucked away deep in a botanical garden.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

A trail of footprints discovered after a landslide was left not by the Devil, as originally believed, but by an early human ancestor.

This clifftop arch is a natural stunner.