19th century cemetery hidden in Brooklyn's Prospect Park.

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

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

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

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

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Some of the best Persian food in New York comes from the front window of an unassuming pizza shop.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A basement pool hall is the front for some of the best Dominican food in New York City.

This small, hidden cove is home to abandoned boats.

A hidey-hole sandwiched between cellphone, DVD, and jewelry stores features Tibetan delights.

A hidden bar inside an ad agency has a deliberately misleading name, so employees can stay late under pretext of paperwork.

A Ukrainian church canteen doles out hearty fare in an East Village basement.

This Russian bar-restaurant lies within a three-story underground bathhouse.

Some of New York's best tacos can be found in the back of an unassuming bodega in Queens.

You must take the A train... to the last active cemetery in Manhattan.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

This preserved wilderness hides the remains of a colonial grain mill used to feed George Washington's troops.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

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

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.