For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The oldest surviving synagogue in New York City is now a soaring art space.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

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

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

A hands-on traveling collection of the innovative devices of yesteryear.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Ride the subways of yesteryear.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A celebration of capitalism in Midtown.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

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

A natural gas leak provides a flickering flame beneath a waterfall.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.