The first green space constructed on an elevated viaduct.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

How did a French journalist’s grave become the sexiest statue in the cemetery?

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

Hundreds of hidden passageways weave through the old quarters of Lyon.

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.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

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

The celebrated eyesore created by starry-eyed sweethearts.

This massive library holds what was once the largest book collection in the world.

Abandoned railway line circling the city of Paris.

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

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

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

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

An ancient iron pillar in Delhi that seems to be rustproof.

A blooming house of worship for the masses.