The largest and most famous wax anatomical collection anywhere in the world.

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

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

Naturally formed rock city in Poland.

The largest toy museum in Poland showcases Europe's history of childhood.

The beautiful baroque library of the Hapsburg empire.

The house that took a plunge into the facade of a museum.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Macabre museum devoted to historical Viennese murders.

Ride a dragon train into a world of dwarves.

When the rain falls, this drain system turns into a musical instrument.

Ruins of a German Castle on top of a towering stone pillar.

Massive installation of Europe's negative stereotypes.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

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

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

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

Bohemian paradise covered in majestic forests.

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

A crucified and bearded female saint.

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

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

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