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

A cheeky architectural easter egg.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

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

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Mysterious painted skulls in Moravia.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

This Norman castle has been the scene of assassination plots, religious persecution, and Nazi conspiracies throughout its long history.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

A house of bones — but nobody is quite sure to whom they belong.

A Biblically-based Natural History Museum.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

Ukraine's oldest operating pharmacy now offers guests a fascinating walk through apothecary history.

An enormous and lavish Gothic church in Czechia.

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

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

Europe's second largest ossuary wasn't discovered until 2001.

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

The remains of a 19th century spring, and the site of an infamous unsolved murder.

This artificial cave looks like something out of a fairytale.

A crucified and bearded female saint.

This 2,700-year-old woman is the jewel of the Maidstone Museum's Egyptian collection.