Folklore and history carved into Brittany's coast.

A unique military outpost carved into a rocky outcrop in the English Channel.

An ancient monastery, a locked room, and a mysterious book heist.

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

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

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

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

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

Two small chapels housed inside an ancient tree.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

This massive blockhead sculpture hides an entire library.

Historic medieval fortified city in southwest France.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Ancient paintings known as the "Sistine Chapel of Cave Art."

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A museum of carnival attractions where you are invited to ride the rides.