Once a dumping spot, now a park with a kayak launch.

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

If you were standing here on October 5th, 1950, you'd be dead.

The greatest real estate coup of all time.

New York City's only radical feminist independent bookstore.

Salute the leader of the proletariat.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

A reminder to choose water over wine since 1888.

Guerilla gardeners reclaimed this abandoned railroad land literally putting down roots.

Nondescript elevator doors open to reveal a stunning, surreal world.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Unrepaired walls from a 1920 anarchist bomb attack.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Lie in a hammock where George Washington stood.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

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

A well-worn marker in a forgotten alleyway is all that remains of what had been one of Manhattan's most beautiful buildings.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.