The mummified relic of St. Antoninus.

The middle finger of modernity.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

This 16th-century monastery has been turned into a surrealist architecture compound.

A 16th-century horror show built in a lovely Italian garden.

A hospital where antique dolls are given new life.

This "floating railway" is one of the world's oldest monorail systems.

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

Artfully arranged bones of 5,800 Austrians.

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

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

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

Structure built from the skulls of vanquished foes.

A curious cave church carved into the face of a cliff.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

Jesus' footprints and the first catacombs in the world.

Virgil's many-mouthed gateway to the underworld.

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

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

Mexico's astounding mummy museum with "the world's smallest mummy."

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

Terrifically morbid cemetary and site of famous Paracelsus' grave.

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