One man's desire to transcend art led to the construction of this outsider chapel.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

This otherworldly French waterfall looks like its waters have turned to stone.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

A French library that makes sure its love of books is writ large... giant in fact.

One of the world's most complex timepieces.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

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

The sunken structure looks like the victim of a catastrophic flood.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

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

The world's tallest bridge is also possibly the most elegant.

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

Architect Le Corbusier built his friend a cubist house to match his impressive collection of cubist art.

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

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

An aluminum skeleton brings Chinese mythology to the French shore.

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