The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

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

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

The most confusing clock in New York.

The mummified relics of an American missionary.

Salute the leader of the proletariat.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

The site of the deadly Triangle Shirtwaist Factory Fire.

A Manhattan office building is home to the world's largest chess board.

NYC's legendary underground network for bovine transportation.

A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.

Rummage through this sunken ship, but leave your scuba gear at home.

A whimsical, but often overlooked clock in Park Avenue.

Relics given to a Manhattan church to avoid seizure by the Italian government.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Unrepaired walls from a 1920 anarchist bomb attack.

The oldest living tree in Manhattan comes shrouded in sinister legend.

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

The former hotel where Tesla invented the radio.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

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

Visit the monolithic tomb of America's most famous general.

An artist's cute bronze subway sculptures belie his violent artistic past.