Prospect Park is a 526-acre (2.13Â km) urban park in the New York City borough of Brooklyn. The park is situated between the neighborhoods of Park Slope, Prospect Heights, Crown Heights, Prospect Lefferts Gardens, Flatbush, and Windsor Terrace, and is adjacent to the Brooklyn Museum, Grand Army Plaza, and the Brooklyn Botanic Garden. With an area of 526 acres (213Â ha), Prospect Park is the second-largest public park in Brooklyn, behind Marine Park. Designated as a New York City scenic landmark and listed on the National Register of Historic Places, Prospect Park is operated by the Prospect Park Alliance and NYC Parks.
First proposed in legislation passed in 1859, Prospect Park was laid out by landscape architects Frederick Law Olmsted and Calvert Vaux for the then-independent city of Brooklyn. Prospect Park opened in 1867, though it was not substantially complete until 1873. The park subsequently underwent numerous modifications and expansions to its facilities. Several additions to the park were completed in the 1890s, in the City Beautiful architectural movement. In the early 20th century, New York City Department of Parks and Recreation (NYC Parks) commissioner Robert Moses started a program to clean up Prospect Park. A period of decline in the late 20th century spurred the creation of the Prospect Park Alliance, which refurbished many parts of the park from the 1980s through the 2020s.