http://www.atlasobscura.com/articles/islands-of-the-undesirables 

“...NYC"s Islands of the Undesirables, the hidden-in-plain-sight places that we have used for asylums, prisons, detention centers, medical research facilities and other unsavory destinations right on the edge of glittering ManhattanNYC"s Islands of the Undesirables, the hidden-in-plain-sight places that we have used for asylums, prisons, detention centers, medical research facilities and other unsavory destinations right on the edge of glittering Manhattan...”

A door with patient's names carved in abandoned Tuberculosis Pavilion .