Museum in a swimming pool where the water still flows.

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

Ghosts of France's colonial past.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Since ancient times these picturesque springs have been providing bathers with healing waters.

The tomb of history's greatest potato promoter is surrounded by tubers.

A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

Two small chapels housed inside an ancient tree.

Beautiful carved tunnels.

An odd museum dedicated to French fakes.

These quaint French houses dangle precariously over a precipice.

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

The famous winding walk at Chartres is surrounded in mystery and myth.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

The fantastic architectural models of a French traveler.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

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

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

The largest underground church in Europe.

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

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

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