Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

A massive underwater sinkhole made famous by Jacques Cousteau.

Rising from the sea like a stone monster.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.

Staves, storm-calling, and of course, necropants.

A market for witches is hidden within a train station.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

This witch statue remembers a time in England's history when fear trumped truth.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

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

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

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

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

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

This elaborate towering structure was once famed for its revolutionary height.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

The intriguing personal collection of a professional demon-chaser.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.