A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

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

One architect's organic, human-centric design has been fully realized in this alien art house.

A chapel on a volcanic core, marking the end of a successful journey.

A self-built mosaic house and sculpture park.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

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

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

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

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

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

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

Stroll through retro Paris while shopping for old postcards and discarded doll heads.

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

France's national museum of scientific and industrial instruments.

A museum of carnival attractions where you are invited to ride the rides.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A monthly street "service" of handmade puppets and live original puppets, whose devotees profess has the power to change lives.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.