Museum in a swimming pool where the water still flows.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

One of the greatest maze designer’s greatest mazes.

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

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

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

Sculpture of a legendary French dragon.

Walk through living pictures and music in the Cathedral of Images.

Artist Danielle Jacqui decorates nearly every inch of her home inside and out with her work.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

For a brief time in 1960s France, families could climb into a tiny submarine and be pulled along an underwater journey.

"Drunken ship" sculpture memorializing the French poet in the city where he died.

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

A crumbling island fortress that seems to be covered in a field of stone crosses but is simply incomplete.

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

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

700 iron sculptures crammed into a Mediterranean park.

The home where the famous astrologer wrote some of his most telling prophecies.

Longest canal tunnel in the world, abandoned in the 1960s.

An often-shuddersome journey into a low-tech, robotic themepark.

Now a memorial, this factory was once used as a concentration camp for artists by the Vichy government.

A French library that makes sure its love of books is writ large... giant in fact.