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

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

A mechanized clock where a man fights off a dragon, crab, and rooster.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

A haunting collection of the vanished and disappearing natural world.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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

The oldest stone house in Paris was built by its most famous alchemist.

Abandoned railway line circling the city of Paris.

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

Notorious artist squat renovated into legal studios.

The plague quarantine island home to the alleged "Vampire of Venice."

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

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.

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