From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

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

Old vessels have been transformed into artistic canvases in this unusual cemetery.

This French "sea of rocks" is packed with stunning rock formations and its own medieval castle.

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

An unusual sand beach in the middle of a forest.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

This 1,400-year-old abbey was once a powerhouse for music and intellectualism known across Normandy.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

French commune at the heart of conspiracies.

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

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

This mountain trail inspired Nietzsche to complete his magnum opus.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

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

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

Tens of thousands of ancient rock carvings hidden in the heart of a French national park.

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

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

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

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

A small house sits between two huge rocks, with its back to the sea.