Former bridge turned into an observation tower.

The people's champion of the French Revolution was so overcome by grief at his wife's death that he exhumed her in the dead of night to make one final replica of her face.

When the imprisoned pope's remains were finally returned to the Vatican, his heart stayed behind in France.

France's highest manned weather station is the only one still inhabited by meteorologists.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

Grottoes, sculptures, and recycled ceramics permeate what was once just a small farm in France.

This historic stone gate tower is now just a lonely relic in the middle of a swamp.

One of the most powerful religious centers in the Middle Ages, dubbed the founder of Western monasticism.

The Nobel-Prize-winning author of The Stranger is buried beneath a simple gravestone in a sleepy French village.

100-windowed castle turned art gallery, built by one dedicated mason.

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

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

French commune at the heart of conspiracies.

An architectural oddity of six stories, accessed by graceful ramps.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

A medieval military street hidden beneath a charming French fishing village.

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

The construction of a tram line unveiled hidden remnants of the old medieval city.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Architect Le Corbusier built his friend a cubist house to match his impressive collection of cubist art.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.