This ancient theater was once the home of fierce gladiatorial battles.

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

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.

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

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

Former hunting lodge of a duke who was an avid collector of impressionist works.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

The deserted pirate-themed restaurant still entices explorers.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

A tiled, multi-level garden of survival in Lyon.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

A bike train runs along a disused railway line through the tranquil French countryside.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

The sunken structure looks like the victim of a catastrophic flood.

Ordinary art transforms to extraordinary thanks to locals' quirky sense of humor.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

The encased skull that is widely believed to belong to St. John the Baptist.

A French artist's vague warning hangs over Belleville.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

A swath of France so devastated by war it is still forbidden to go there.

The personal library of the founder of modern neurology is open to visitors.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.