the side of a knoll commanding sweeping views of Narellan and obeying the principles of 18th Century English landscape design. Orielton is considered to be of exceptional significance because of the integrity of its rural setting and the demonstrable functional relationships within the homestead and farm complex. The varied topographical features of Orielton (ridges, knolls and gentle slopes) contribute significantly to the setting and function of the property and its significant visual links with surrounding properties such as Harrington Park and Studley Park, the spire at St John's Church, Cobbitty and The Northern Road. Orielton outline of significance: It still retains its quintessential landscape character - based on the traditional juxtaposition of homestead area, with its dominant garden, and cleared pastureland beyond; Its historical relationship to other nearby early grants (Harrington Park, Wivenhoe and Kirkham) and its place in the development of the local area can still be appreciated; It has associations with some notable people; The place retains its historical local prominence and serves as an important local landmark; The place retains some key historical visual relationships - vistas to Harrington Park, Studley Park, the spire of St. John's, Camden and the Razorback Range; A relatively intact estate - still able to appreciate the main homestead group in its traditional rural context and in relationship to the various natural features - Narellan Creek and the enclosing ridgelines; The place has many features of individual significance such as the original homestead, later homestead, outbuildings, garden layout, terracing and mature plantings and the entry drive from the Northern Road; The place has considerable capacity to demonstrate its development from to the present; The place is of considerable scientific interest on account of its archaeological research potential. Orielton was listed on the New South Wales State Heritage Register on 22 December 2006 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. Orielton is historically significant as one of the first land grants in the Cowpastures district that still retains its historical relationship to other nearby early grants such as Harrington Park, Wivenhoe and Kirkham. Orielton is an important historical property in the development of the local area. The place has a strong or special association with a person, or group of persons, of importance of cultural or natural history of New South Wales's history. Orielton has several