A self-built mosaic house and sculpture park.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

Museum in a swimming pool where the water still flows.

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

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

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

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

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

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

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

A medieval military street hidden beneath a charming French fishing village.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

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

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

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

This massive blockhead sculpture hides an entire library.

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

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.