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

The first green space constructed on an elevated viaduct.

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

Indents in the pavement are all that remain from a grisly death machine in Paris.

A surrealist timepiece by the artist of melting clocks.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

This innocent-looking townhome is actually a subway exit.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Bowl in splendor, if you're lucky.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

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

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.