A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

The encased skull that is widely believed to belong to St. John the Baptist.

This little-known relic crypt holds stolen parts of a Roman Empress.

A mechanized clock where a man fights off a dragon, crab, and rooster.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

There has been an astronomical clock on this spot since the 14th century.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

A luxury hotel housed in a former 15th century Gothic church.

This historical Netherlands fortress still bears the marks of its single siege.

Incredible labyrinth of man made caves.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

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

An existential riddle in the world's largest ancient castle.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

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

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

An Orwellian sculpture with eyeball cameras watches passersby.