Exerpt from Wikipedia
Prospect Park is a 585 acre (2.1 km²) public park in the New York City borough of Brooklyn located between Park Slope, Kensington, Windsor Terrace and Flatbush Avenue, Grand Army Plaza and the Brooklyn Botanic Garden and seven blocks north east of Green-Wood Cemetery. It is run and operated by the New York City Department of Parks and Recreation.
The park was designed by Frederick Law Olmsted and Calvert Vaux after they completed Manhattan's Central Park. Attractions include the Long Meadow, a ninety acre (36 ha) meadow thought to be the largest meadow in any U.S. park; the Picnic House which houses offices and a hall that can accommodate parties with up to 175 guests; Litchfield Villa, the historic home of the previous owners of the southern part of Park; Prospect Park Zoo; a large nature conservancy; the only urban Audubon Center & Visitor Center at the Boathouse; Brooklyn's only lake, covering 60 acres (24 ha); the Prospect Park Bandshell that hosts free outdoor concerts in summertime; and various sports and fitness activities including seven baseball fields. There is also a private Quaker cemetery on the grounds of the Park in an area known as Quaker Hill. (Actor Montgomery Clift is interred there.)