The site of the deadly Triangle Shirtwaist Factory Fire.

An accidentally hidden library containing the ephemeral history of New York.

Ever wanted the laymen's version of your credit card fine print?

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

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

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

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.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

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

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

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.

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

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

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

On the Hudson resides one of the largest clocks in the world.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

Home of the golf club used by Alan Shepard on the moon, and more artifacts from the sport's history.

A historic grist mill and active sluice on the Black River.

A world-class collection of mechanical musical instruments and automata.