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

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

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

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

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

An aluminum skeleton brings Chinese mythology to the French shore.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

An icy lake tucked among jaw-dropping alpine panoramas.

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

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