This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

Southern Italy's spinning top village.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

One of downtown Berlin's last reminders of its Communist past.

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

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

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

A series of playful yellow penguins share a serious message about the environment.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

An eerie, little-known Neapolitan museum filled with preserved human remains.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

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

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.