An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

Perfume museum and library.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

A unique zoological park home to over 30 species of wild cats, both big and small.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

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

France's high-tech, future-themed amusement park.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

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

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

This ancient theater was once the home of fierce gladiatorial battles.

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

The deserted pirate-themed restaurant still entices explorers.

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

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

The Argonaute submarine was the French navy's pride and joy in the 1950's.

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