A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

A curious collection of locks and keys.

An odd museum dedicated to French fakes.

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

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

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

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

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

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

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

Figures of unknown origin carved into the surfaces of underground caves.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

An unusual number plate signifies the building's saucy past.

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

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

Perfume museum and library.

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

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

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

A museum which takes visitors to the côté obscure of Paris.

One of the world's most complex timepieces.

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

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