An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

Mummified monks and the accidentally interred, in a 17th-century crypt.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This artificial cave looks like something out of a fairytale.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Two monstrous faces loom over a village in Czechia.

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

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

The first museum in the world devoted to sexual gadgetry.

Walk through Czech history in Prague's largest graveyard.

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

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

Macabre astrological automaton clock dating to the late 1400s.

A church of bones, decorated with 40,000 human skeletons.

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

This renaissance château was home to an infamous witch hunter who sent a hundred suspected witches to their deaths.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

The mystery of the Putim Ossuary involves a tricorn hat.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

These 17th-century mummies are no longer naturally preserved, but remain on display today.