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

Beautiful carved tunnels.

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

The fantastic architectural models of a French traveler.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

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

An enchanting work of outsider art, full of whimsical sculptures and carvings.

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

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

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

An aluminum skeleton brings Chinese mythology to the French shore.

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

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

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

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

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

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

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

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

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

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

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

This salt marsh in Southern France is as pink as the flamingos that inhabit it.