Jean Tinguely's bizarre monster sculpture is hidden deep in a forest.

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

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

One of the world's most complex timepieces.

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

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

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

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

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

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

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

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

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

An abandoned beach resort in Normandy reclaimed by artists.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

These quaint French houses dangle precariously over a precipice.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

An aluminum skeleton brings Chinese mythology to the French shore.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

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

A subterranean shelter remains intact under a busy Paris railway station.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.