This Parisian café sticks almost exclusively to an ethos of reuse.

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

Statue of death tucked in the University of Medicine courtyard.

This museum houses an imposing skeleton army comprised of creatures great and small.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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

France's national museum of scientific and industrial instruments.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A haunting collection of the vanished and disappearing natural world.

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

Paris' linguistic guide to the international language of, yes, love.

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

Notorious artist squat renovated into legal studios.

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

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

Abandoned railway line circling the city of Paris.

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

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

A modern zoetrope on the New York City subway.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.