1513 Turkish world map, full of European state secrets and snarky commentary.

A marvel of Byzantine engineering under the streets of Istanbul.

Turkish adventurer antiques in the heart of the Grand Bazaar.

The amazing wonder cabinets of a very rich Austrian archbishop.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

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

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Sacred Indian temple that’s all monkey business.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

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

The astonishing collection of an infamous criminologist.

One of the world’s best microminiaturist, Nicolaï Siadristy displays his lifetime of tiny creations in this museum.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

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

The first museum in the world devoted to sexual gadgetry.

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Macabre astrological automaton clock dating to the late 1400s.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Microscopic scenes; some call it novelty, some call it art.

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

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

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