A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Prove you deserve to be fed by Kenny Shopsin.

A very classy 1920s-era bar right in Grand Central Station.

Slyly buy a shake in the Parker Meridien lobby.

Walk over a 150 year old manhole.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

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

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A celebration of capitalism in Midtown.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Peek through the gates at this oasis from the city, full of Old English charm.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

New York City's smallest piece of private property.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A semi-scholarly approach to sex.