Central Park is the 843-acre masterpiece of landscape architecture designed in the 19th century by Frederick Law Olmsted and Calvert Vaux and designated New York City's first scenic landmark in 1974. The mission of Central Park Conservancy, a private, not-for profit organization founded in 1980, is to restore, manage and enhance Central Park in partnership with the public, for the enjoyment of all. Central Park Conservancy raises 75% of Central Park's annual Parkwide expense budget and is responsible for the day-to-day maintenance and operations of the Park.