Photo: "Skylight in Lieu of Decay"

Greystone Park Psychiatric, in Morris Plains, New Jersey was constructed in 1877, following the Kirkbride plan, to relieve overcrowding at nearby Trenton State Hospital and was known as the largest contiguous foundation in the United States, from it's opening until the Pentagon was built in 1943. 

(Print: http://smu.gs/1gA9qti )