Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

A landscape decorated with enormous skull sculptures.

Artfully arranged bones of 5,800 Austrians.

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

Walk through depictions of the torture inflicted on those who go to Buddhist hell.

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

One native village in Bali lays their dead at the foot of a holy tree whose natural fragrance seems to hide the stench as the bodies decompose.

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

These "anatomical machines" are only one of the many strange items in this Italian crypt.

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

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

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

Countless stories attempt to explain Poland's mysterious J-shaped trees.

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Countless grotesque faces stare out from this eerie Prague art wall.