This new reference guide, created by the New York City Department of Parks & Recreation, in partnership with the nonprofit Design Trust for Public Space, presents an overview of leading design strategies, with a nod to lighting, for the way New York City outdoor space is designed, constructed, and maintained. The goal is to “green” the city's 29,000 acres of parkland by cleaning water and air, increasing biodiversity, lessening the burden on sewer systems, reducing the urban-heat-island effect, improving public health, and reducing energy consumption. The guidelines can be downloaded at