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

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

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

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

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Peek through the gates at this oasis from the city, full of Old English charm.

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

A very classy 1920s-era bar right in Grand Central Station.

The "Seinfeld" diner.

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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

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

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

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

More gold than anywhere else, ever.

One of only two commuter aerial tramways in the United States.

New York City's smallest piece of private property.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A dilapidated dock tells the story of Titanic's missed arrival.

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