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

Museum in a swimming pool where the water still flows.

The world's largest reflecting pool is just two centimeters deep.

A chapel on a volcanic core, marking the end of a successful journey.

This collection of French root art looks like an indoor fairy wonderland.

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

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

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

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.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

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

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

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

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

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

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

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

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

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

Beautiful carved tunnels.

The fantastic architectural models of a French traveler.

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.