The vast, legendary catacombs hold secrets much stranger than stacked bones.

France's most famous cemetery, with some of its most curious tombs.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

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

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

A fitting attraction for the corn capital of the world.

A bizarre house filled with an astounding array of collections.

The palatial McDonald's that inspired Wesley Willis.

These pretty kitties killed and ate as many as 135 railway workers.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Museum dedicated to the art of cutting and polishing stones.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

World's second largest particle accelerator, where nature reveals its secrets.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.