New South Wales's history. The Wynstay Estate was established by Richard Wynne, a prosperous merchant who became a prominent citizen in Sydney and at one time the Mayor of Burwood municipality. Wynne was a pioneer settler of Mount Wilson and also the founder of the Wynne Prize for Landscape Painting and Sculpture at the Art Gallery of New South Wales. As evidence of Wynne's occupation of the site and his personal vision of an ideal landscape, the estate is of State significance. (Design 5 Architects) The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. The Turkish Bath is a rare intact example of a purpose built private Turkish Bath in Australia, and survives substantially intact. The building is an unusually fine example of late Victorian boom style architecture with polychrome brickwork and Italianate details. The evidence of its operation is of high technological significance and is extremely rare in Australia, possibly unique. Interest in Turkish Baths in Australia appears to have developed shortly after their reintroduction in England (into Ireland in 1860 then later in the north of England: the first introduction to England was in the 17th century). In the late 19th century, two public Turkish Baths were known to have operated in Sydney, and two in Melbourne. Only one other surviving private Turkish Bath is known in Australia, on Dunmore station near Broadwater in Victoria. Wynstay (the house) is a handsome, robust example of inter war Georgian Revival architecture, designed by the prominent Sydney architectural firm, Joseland & Gilling. As a significant group of buildings, structures, artefacts and gardens set in the mountain landscape in the romantic style, the Wynstay estate is of local aesthetic significance. The gate lodge and stables are significant examples of 19th century pattern book architecture. The place has a strong or special association with a particular community or cultural group in New South Wales for social, cultural or spiritual reasons. Evidence of adaptation and change manifest in the buildings, artefacts and landscape is of significance as a record of changing tastes and technologies from 1870 to the present day. It may also have greater significance as evidence of particular events in the Wynne family history. The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales. Wynstay as a hill station property of some