This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

A remote hilltop covered in giant monoliths haunts the Brittany countryside.

A huge Megalithic chamber tomb located behind a cafe.

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

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

Figures of unknown origin carved into the surfaces of underground caves.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

15,000 year old bison sculptures.

The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

Resting on a hill overlooking the coast, these medieval ruins look completely deserted save for their restored chapel.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

Home to the "Rat King" of Nantes and other wonders of the natural world.

Fighting the British and making game shows for over 150 years.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

For over 300 years this little carving has been the city’s good luck charm.

The world's most famous cheese caves.

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

Natural mummies hidden in the crypt of a medieval French church.

A unique underground structure dating back to the 1st century BC.

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

An odd museum dedicated to French fakes.

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