An annual extravaganza of Broadway theater memorabilia.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

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

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

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

An artist's cute bronze subway sculptures belie his violent artistic past.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

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

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

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

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A natural gas leak provides a flickering flame beneath a waterfall.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

A once grand hotel is being retaken by the wilderness it once capitalized on.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

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

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

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

An abandoned castle owned and ignored by Masons carries a cursed history.

Nondescript elevator doors open to reveal a stunning, surreal world.