These historic buildings once housed the headquarters of one of the most infamous gangs of New York.

Read a book next to a Midtown waterfall.

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

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

A Manhattan office building is home to the world's largest chess board.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A celebration of capitalism in Midtown.

The former sign of this immortal music venue is just that--undying.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Slyly buy a shake in the Parker Meridien lobby.

The saddest little diner in New York.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

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

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

A hands-on traveling collection of the innovative devices of yesteryear.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

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

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

A staggering collection of photographs depicting medical, social, and historical change.