The preserved house of a jazz legend still echoes with his music.

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

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

Hundreds of antique bank vault locks on display in New York City.

What happens here stays here – unless it affects the whole world.

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

This small New York museum examines Chinese history from its origins right up to its arrival in the city.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

Finally, you don't have to be a pious Swedish seaman to relax like one.

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

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

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

Cryptic messages embedded in the New York City sidewalk.

A hidden "place of interment for gentlemen."

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

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

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

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

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

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."