This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

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

A posh members-only club with a literally dramatic history.

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.

Commemorating the spot where the famous scientist fed his pigeons.

A curious friendship between two inanimate ladies.

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

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

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

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

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 otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

An arcade packed with a rotating collection of unique independent video games.

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

Come for the sustainable organic chocolate, stay for the sustainable organic booze.

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

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

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

Once America's longest-manned military fort, now an abandoned hulk.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Abandoned power station once home to a squatter community, now being developed into an arts center.