Elevated freight railway turned wildly successful urban park.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A graffiti Mecca welcoming artists from around the world.

The graveyard holds the remains of Irish immigrants who arrived in Queens after fleeing the Great Famine.

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

Holding the most bodies of any cemetery in the United States.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Final resting place of Typhoid Mary.

The mosaic Star of David at the front of this store hints that it's no ordinary Italian grocer.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

An illegally built ramshackle mansion tucked in the middle of Brooklyn is now being turned into condominiums.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

One of the largest public housing complexes in New York once visited by Eleanor Roosevelt.

Where there’s manufacturing, there’s fire!

Red Hook's massive public pool, built by Robert Moses.

Neoclassical bank designed by NY architects Helmle & Huberty.

Nearly four centuries after its founding, remnants of one of the oldest planned communities in North America are still visible in southern Brooklyn.

Once home to the country's most gargantuan ships, this graving dock now waits for people to buy furniture.

The highest rapid transit station in the world.

Love is in the air along the small street in Brooklyn.