A self-built mosaic house and sculpture park.

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

These quaint French houses dangle precariously over a precipice.

An aluminum skeleton brings Chinese mythology to the French shore.

The fantastic architectural models of a French traveler.

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

Historic medieval fortified city in southwest France.

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

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

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

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

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

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

A unrivaled and rather horrifying collection of wax dermatological models.

Statue of death tucked in the University of Medicine courtyard.

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

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

A mechanized clock where a man fights off a dragon, crab, and rooster.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

A haunting collection of the vanished and disappearing natural world.

Paris' linguistic guide to the international language of, yes, love.

A curious urban windmill once owned by a renowned British mathematical physicist.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

Left by the Devil, an ancient quarry or just plain old erosion, this enigmatic rock pillar rises 28 feet from the hillside.