Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

Antique cinematography artifacts fill this museum dedicated to the inventors of the moving picture.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

France's Lilliputian park displays over 100 of the country's monuments for visitor perusal.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

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

This 400-year-old tree is actually an immigrant from North America.

This crack in France's seaside cliffs once hid a sinister secret.

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

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

This oddly shaped boulder in Paris is rumored to be cursed.

This 18th-century sundial was designed to calculate the date of Easter each year.

The remains of the medieval wall that once surrounded Paris with ties to the construction of the Louvre.

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

A place to see how French aristocrats lived in the early 1900s.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

This mountain trail inspired Nietzsche to complete his magnum opus.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

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

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

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