A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

An odd museum dedicated to French fakes.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

This collection of French root art looks like an indoor fairy wonderland.

Museum in a swimming pool where the water still flows.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

Beautiful carved tunnels.

The fantastic architectural models of a French traveler.

Monsters and miniatures are held in equal esteem at this wondrous museum.

This professional clown's home is an outsider art wonderland.

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

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

Historic medieval fortified city in southwest France.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

An icy lake tucked among jaw-dropping alpine panoramas.

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

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The curious underground history of keeping Paris clean.

One of the greatest maze designer’s greatest mazes.

A unrivaled and rather horrifying collection of wax dermatological models.