The Ramble and Lake is a main feature of Central Park in New York City. Part of Frederick Law Olmsted and Calvert Vaux's "Greensward" plan (1857), The Ramble was intended as a woodland walk through highly varied topography, a "wild garden" away from carriage drives and bridle paths, to be wandered in, or to be viewed as a "natural" landscape from the formal lakefront setting of Bethesda Terrace; American sycamore; white, red, black, scarlet, and willow oaks; Hackberry; and Liriodendron – together with some American trees never native to the area, such as Kentucky coffee tree, yellowwood, and cucumber magnolia, and a few exotics, such as Phellodendron and Sophora. Smaller natives include sassafras. Aggressively self-seeding black cherry and black locust have come to dominate the Ramble. A 1979 census of The Rambles' trees, taken by Bruce Kelly, Philip Winslow, and James Marston Fitch, found 6000 trees, including 60 specimen trees of landscape value.