An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

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

This small chapel is built of human bones and decorated with a golden skeleton.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

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

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

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

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This spooky statue sits outside a famous Prague theater.

A crucified and bearded female saint.

An existential riddle in the world's largest ancient castle.

This artificial cave looks like something out of a fairytale.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

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