An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

A Netherlands hotel where you can sleep inside a wine barrel.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This steel frame is a skeletal mirage of a lost 16th-century stone building.

Lavish royal estate punctuated with heated greenhouses.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

Copenhagen's celebrated theme park and gardens.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

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

Charnel house at the foot of Mount Sinai.

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.

Mysterious painted skulls in Moravia.

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

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.

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

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