Sleep in a climate-controlled plastic bubble for the night.

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

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

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

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

One of the greatest maze designer’s greatest mazes.

An art world insider finds himself battling for his artistic home.

The fantastic architectural models of a French traveler.

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

This professional clown's home is an outsider art wonderland.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

This massive library holds what was once the largest book collection in the world.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

France's most famous cemetery, with some of its most curious tombs.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

France's national museum of scientific and industrial instruments.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This Parisian gem is one of the most incredible ethnographic museums in the world.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.