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

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

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

Hiroshima survivor on Riverside Drive.

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

Little Red Lighthouse under the George Washington Bridge.

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

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

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

Historical figures from New York City's Catholic community reside in Midtown.

Avoid gangster interaction while window-shopping.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Lie in a hammock where George Washington stood.

A bit of retro transportation flair preserved in the world's largest department store.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

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

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

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

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

New York City's smallest piece of private property.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.