The Central Library, originally the Ingersoll Memorial Library, is the main branch of the Brooklyn Public Library in Brooklyn, New York City. Located on Grand Army Plaza, at the corner of Flatbush Avenue and Eastern Parkway, it contains over 1.7 million materials in its collection and has a million annual visitors. The current structure was designed by the partnership of Alfred Morton Githens and Francis Keally in the Art Deco style, replacing a never-completed Beaux-Arts structure designed by Raymond Almirall. The building is a New York City designated landmark and is listed on the National Register of Historic Places.

Grand Army Plaza, originally known as Prospect Park Plaza, is a public plaza that comprises the northern corner and the main entrance of Prospect Park in the New York City borough of Brooklyn. It consists of concentric oval rings arranged as streets, with the namesake Plaza Street comprising the outer ring. The inner ring is arranged as an ovoid roadway that carries the main street – Flatbush Avenue. Eight radial roads connect Vanderbilt Avenue; Butler Place; two separate sections of Saint John's Place; Lincoln Place; Eastern Parkway; Prospect Park West; Union Street; and Berkeley Place. The only streets that penetrate to the inner ring are Flatbush Avenue, Vanderbilt Avenue, Prospect Park West, Eastern Parkway, and Union Street.