The vast, legendary catacombs hold secrets much stranger than stacked bones.

A graveyard and memorial chapel for victims of leprosy.

The name doubles as an appropriate adjective for this small ossuary.

The mystery of the Putim Ossuary involves a tricorn hat.

In a small churchyard in Dingolfing, Germany the quaint Schusterkapelle is there to remind you of your imminent mortality.

In 1830, cemetery workers in Cham unearthed a chamber housing thousands of skeletal remains from the 13th century, which can still be viewed today.

Mysterious painted skulls in Moravia.

This German bone house contains the remains of some 20,000 souls.

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

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

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