A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

Macabre astrological automaton clock dating to the late 1400s.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

A little bit Wonkatania, a little bit pink elephant.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

The Pope’s secret escape route.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

Home to the most complete dodo remains known - one head, and one foot.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Detailed sandstone carvings show an array of symbolism and adorable animals.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

The weathered grave of a medieval anchoress who walled herself up in a cell attached to a church.

Open for a weekend once a year around October it houses a fascinating collection of unique Victorian preserved and stuffed animals.

A rampant horde of demons smirk and snarl at visitors to this church, home to a rare complete set of medieval-era stained glass windows.

A genuine Little Shop of Horrors.

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