This banal Parisian entranceway is not what it seems.

An aluminum skeleton brings Chinese mythology to the French shore.

Beautiful carved tunnels.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Two small chapels housed inside an ancient tree.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

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

This massive blockhead sculpture hides an entire library.

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

The curious underground history of keeping Paris clean.

A unrivaled and rather horrifying collection of wax dermatological models.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

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

Egyptian Revival movie palace abandoned for decades and restored in 2013.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

One of the greatest maze designer’s greatest mazes.

Abandoned railway line circling the city of Paris.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.