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

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

A notorious punk house turned co-op.

Feral cats keeping the rodent population at bay all across Greenpoint waterfront.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

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

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

Check out the underground party scene at the "Burning Man of Brooklyn."

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

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

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

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

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

This innocent-looking townhome is actually a subway exit.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

New York's oldest and possibly grandest keeper of books.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The first and only carousel with a lineup entirely of insects.

Slyly buy a shake in the Parker Meridien lobby.

This semi-hidden Manhattan restaurant is based out of a loading dock.