The only theatre in the world constructed specifically for sound movement.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

How did a French journalist’s grave become the sexiest statue in the cemetery?

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

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

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A unrivaled and rather horrifying collection of wax dermatological models.

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

A haunting collection of the vanished and disappearing natural world.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

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

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

Abandoned railway line circling the city of Paris.