This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

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

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Historic medieval fortified city in southwest France.

A Gothic cathedral created from volcanic rocks.

The largest underground church in Europe.

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

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

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

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

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

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

The celebrated eyesore created by starry-eyed sweethearts.

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

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

An ancient monastery, a locked room, and a mysterious book heist.

Largest necropolis in the Mediterranean.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Home to three historic ships from the age of Vikings.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.