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

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.

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

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

Catacombs turned marketplace.

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

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

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Eighty million natural history specimens call this gargantuan museum home.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Banksy gives themself artistic license with this piece of London street art.

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

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

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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

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

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Sloth rehabilitation center in the jungle of Costa Rica.

Divinely-inspired village houses 6,000 dolls, plus strange and lovely outsider art.