A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A gorgeous medieval library where the books are kept in chains.

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

David Sedaris called it "The greatest shop in the world."

An extraordinary collection of 18th century anatomical waxworks.

A diverse collection of wax, bone, papier-maché and mummified relics.

The mummified relic of St. Catherine sits forever on a golden throne.

An amazing collection of wax anatomical models and terratological models.

This zoological museum began as the first great curiosity cabinet.