Order a boozy baba au rhum at the oldest patisserie in Paris.

This massive sculptural work outside of Paris was four decades in the making—and it's still not quite complete.

The former global standard for the exact mass of one kilogram sits under lock and key outside Paris.

The world's largest boar is a huge steel titan found at a French rest stop.

This mosque was based on Sub-Saharan Islamic architecture and created for the Senegalese Tirailleurs.

This French chateau is home to the world’s largest private collection of fighter jets.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.

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

1920's reinforced concrete church by architect Auguste Perret changes the face of modern design.

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

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

One architect's organic, human-centric design has been fully realized in this alien art house.

This army of concretions is an unexplained geological phenomenon unlike anything else in the world.

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

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

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

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

If they push on just the right spot, even the weakest person can move this titanic boulder.

The Church of the Annunciation was carved into the face of a cliff, just like the rest of the town of Haute-Isle.

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

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

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

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

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