The personal charnel house of Anton Bruckner.

Artfully arranged bones of 5,800 Austrians.

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

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

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

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

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

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

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

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

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Mummified monks and the accidentally interred, in a 17th-century crypt.

Structure built from the skulls of vanquished foes.

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

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

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

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

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

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Hungarian mummies in beautiful painted coffins.