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

Bowl in splendor, if you're lucky.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

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

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

An unassuming secret door once led to a legendary watering hole.

A celebration of capitalism in Midtown.

The "Seinfeld" diner.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

More gold than anywhere else, ever.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The oldest surviving presidential residence in the United States.

A museum and research center dedicated to preserving the history of Rolls-Royce and Bentley motorcars.

This icon of the Atomic Age now lays dormant.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.