This demon atop the Notre-Dame de Paris looks utterly bored.

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

Inside a former cabaret, seven floors of erotic art.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

France's national museum of scientific and industrial instruments.

Con Edison’s exotic and heat-loving pests.

I fought the law and the precinct caved in.

19th century cemetery hidden in Brooklyn's Prospect Park.

This collection of grinning ephemera has grown from basement to Brooklyn.

An arcade packed with a rotating collection of unique independent video games.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Ride the subways of yesteryear.

Elevated freight railway turned wildly successful urban park.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.