The Stonehenge Landscape is a property of The National Trust, located on Salisbury Plain in Wiltshire, England. The estate covers 2,100 acres (850 ha) surrounding the Neolithic monument of Stonehenge, which is administered by English Heritage. Much of the land is designated open access by the Trust, including the fields immediately around Stonehenge and other fields that become available as part of the chalk grassland reversion project. Stonehenge itself is in the care of English Heritage, having been given to the nation in 1918 by Cecil and Mary Chubb, who had bought it three years previously from the Antrobus family.