For the past four decades, the Seaview Hospital of Staten Island has sat largely abandoned, and has slipped into ruin. At that, it's become an attraction for vandals and curious picture takers, like the f/11 photography collective who recently took an illicit visit to the hospital's children's ward (h/t Untapped Cities). Seaview, which was once the premiere tuberculosis sanatorium in the country, shares a campus with the New York City Farm Colony, a group of 37 buildings developed between 1905 and 1938 as housing for the poor and infirm.

A massive overhaul of the now-abandoned Farm Colony was approved by the Landmarks Preservation Commission in November 2014, which will include converting the 45-acre campus into 350-units of senior housing. The overhaul is slated to begin in 2016. Meanwhile, a few facilities have returned to operating at Seaview Hospital including a rehab center, volunteer firefighting group, and volunteer ambulance service, but it still sits largely abandoned.

Check out Untapped Cities for more photographs from inside the Children's Hospital at Seaview.

· Inside the Abandoned Children's Hospital and Tunnels at Seaview Hospital, Staten Island [UC]

· All New York City Farm Colony coverage [Curbed]