Cryptic messages embedded in the New York City sidewalk.

Unrepaired walls from a 1920 anarchist bomb attack.

New York City's only radical feminist independent bookstore.

Phil Mortillaro uses keys to bring art back to the Village.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

Though the case is scorched and the buttons half-melted, this hardy handheld gaming device can still run a game of Tetris.

The highest rapid transit station in the world.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

This poignant display is now a memorial to these regionally extinct species.

One of the most dazzling dioramas at the American Museum of Natural History is also one of the oldest.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.

The only subway station in the city that still makes use of gap fillers.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

An unrealized dream to wirelessly electrify the entire Earth.

A restored Shell gas station from 1937 that includes a tow truck, the original gas pumps, and the original office.

A no-frills cinephile haven known for showing offbeat, underseen films.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

Dine on old-school red sauce fare at a former mob hang out and film set for The Sopranos.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

A hidden "place of interment for gentlemen."

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

A comic book store got the road by its shop officially renamed after Superman's girlfriend.