A sculptural commentary on capitalism pokes up from the East River.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

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

One of the last Jazz Age "Wonder Theaters" in New York City.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

Hundreds of antique bank vault locks on display in New York City.

An extensive collection of fine art devoted to man's best friend.

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

The famous facade of Grand Central Terminal hides a regulation tennis court—and it's not the first one.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

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

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

A garment factory hides a small Dominican eatery in the hallway to its freight elevator.