Thornbury Hospital is a private hospital which is first depicted as such on the 1976 6 inch OS map. The hospital is housed in a large detached villa of classical style. The houses was constructed in 1864 for Frederick Thorpe Mappin of Thomas Turton & Sons Ltd., Sheaf Works. The gardens were designed by Robert Marnock and retain some of the original design. Prior to the house the area contained field of irregular size and shape, suggestive of assarts. The Scurfield reconstruction of Harrison's 1637 survey suggests that the polygon was at least partly wooded at the time of survey. Legibility of previous types is significant due to the remaining house and gardens.