Beautiful carved tunnels.

The encased skull that is widely believed to belong to St. John the Baptist.

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

Historic medieval fortified city in southwest France.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

An aluminum skeleton brings Chinese mythology to the French shore.

One woman's decades-long obsession with the "La Fée Verte."

A charming flea market shop dedicated to retrofuturistic apparati.

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

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

Two small chapels housed inside an ancient tree.

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

A beautiful and classically designed villa, with an hourly infestation of monsters.

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

One of the greatest maze designer’s greatest mazes.

Ancient paintings known as the "Sistine Chapel of Cave Art."

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

Statue of death tucked in the University of Medicine courtyard.

A surrealist timepiece by the artist of melting clocks.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

The oldest stone house in Paris was built by its most famous alchemist.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.