Morningside Park is a New York City public park primarily located in the Harlem neighborhood of Manhattan, New York City. The 30-acre (12 ha) area occupies 110th to 123rd Streets from Morningside Avenue to Morningside Drive at the border between Harlem and Morningside Heights. Much of the park is adjacent to Columbia University. Morningside Park's natural geography contains a cliff of Manhattan schist rock, with manmade features in the park such as an ornamental pond and waterfall. It is operated by New York City Department of Parks and Recreation. The park was first proposed by the Central Park Commissioners in 1867, and the city commissioned Frederick Law Olmsted and Calvert Vaux to produce a design for the park in 1873. After delays, Jacob Wrey Mould was hired in 1880 to rework the plan