A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Artfully arranged bones of 5,800 Austrians.

The personal charnel house of Anton Bruckner.

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

Mysterious painted skulls in Moravia.

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

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

This Peruvian bone silo lined with hanging human skeletons and hundreds of skulls is topped with a remarkable Michelangelo replica.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

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

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

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

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

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

The mystery of the Putim Ossuary involves a tricorn hat.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Structure built from the skulls of vanquished foes.

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

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.