Thousands of well-dressed mummies below a monastery.

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.

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

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

Structure built from the skulls of vanquished foes.

The mystery of the Putim Ossuary involves a tricorn hat.