An old office building in Long Island, New York, was renovated by the people of Bromley Caldari Architects to use less energy and be more environmentally friendly. The project cost 10 million dollars and among all the changes created a farm of about 4,000 square meters on the roof of the building. About 450 kilos of land were taken to the roof in order to create one of the largest agricultural systems located on a roof. Besides producing food garden this agricultural delivery of shelter and relax, for both humans and birds, besides being an ecological contribution to the city.