Duffryn (Welsh: Dyffryn) is a large housing estate [1] in the southwest of the city of Newport, south Wales comprising a large portion of the Tredegar Park electoral district (ward). Built on land belonging to Tredegar House [2], it was completed in 1978 and at the time won several awards for its design. The layout of the estate, as viewed from above, is that of large terraces undulating around a central wooded area.