Randall’s Island is home to the Parks Department’s Five Borough Administrative Building, the central hub for our Citywide Operations division. In 2007, Parks began the installation of a green roof at Five Borough. Today, Parks’ roof at Five Borough is at the forefront of green roof technology with some of the most innovative systems available. The green roof contains 25 systems covering over 29,000 square feet of roof on the west wing of the building. Taken together, the systems installed at Five Borough will comprise the fifth-largest green roof in New York City. Five Borough’s roof is the only known green roof in the country, and quite possibly in the world, to feature such a vast array of distinct systems side-by-side.