A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

This massive blockhead sculpture hides an entire library.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

The famous winding walk at Chartres is surrounded in mystery and myth.

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

This museum houses an imposing skeleton army comprised of creatures great and small.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

Ancient paintings known as the "Sistine Chapel of Cave Art."

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

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

This modest marker near Notre Dame identifies the very center of Paris.

The oldest stone house in Paris was built by its most famous alchemist.

Abandoned railway line circling the city of Paris.

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

Notorious artist squat renovated into legal studios.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

A 12th-century Italian skirmish gets reenacted with 500,000 pounds of flying citrus.

A dead saint, a deadly poison, and a mysterious holy ooze.

Gods clash with machines in a power plant regenerated as a museum.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Southern Italy's spinning top village.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.