There has been an astronomical clock on this spot since the 14th century.

An art world insider finds himself battling for his artistic home.

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

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

Avant garde house of Pierre Cardin on the Cote d’Azur.

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

Sleep in a climate-controlled plastic bubble for the night.

This little-known relic crypt holds stolen parts of a Roman Empress.

Beautiful carved tunnels.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

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

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

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

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

An aluminum skeleton brings Chinese mythology to the French shore.

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

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

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

This massive blockhead sculpture hides an entire library.

The largest underground church in Europe.

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

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

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