This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Hiroshima survivor on Riverside Drive.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

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

The highest point on the island known for buildings that touch the sky.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

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

This was one of the first (and last) university-built and operated nuclear reactors.

A sculptural commentary on capitalism pokes up from the East River.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

The mummified relics of an American missionary.

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

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.

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

The most confusing clock in New York.

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

The site of the deadly Triangle Shirtwaist Factory Fire.

The notorious headquarters of a corrupt political machine.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

Salute the leader of the proletariat.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.