Swansea Mawr are able to speak Welsh, as can 38% of the ward of Pontarddulais. Clydach, Kingsbridge and Upper Loughor all have levels of more than 20%. By contrast, the urban St. Thomas has one of the lowest figures in Wales, at 6.4%, a figure only barely lower than Penderry and Townhill wards. Local produce includes: The city has three Grade One listed buildings: Swansea Castle, the Tabernacle Chapel, Morriston and the Swansea Guildhall. Swansea Castle was an impressive building occupying a strategic position above the River Tawe. The ruins that are visible today date from the late 13th and early
Swansea Sound on 1170MW and DAB and lastly, the Adult Contemporary-orientated 102.1 Swansea Bay Radio on FM and DAB. The city also has a community radio station Radio Tircoed. It is also served by two regional radio stations: Heart South Wales on its Swansea area frequency (106.0FM) and Nation Radio on its Swansea area frequency (107.3FM) and DAB. The patients and staff at Singleton Hospital can listen to the hospital radio station, Radio City 1386AM and Swansea University also runs its own radio station, Xtreme Radio, on 1431 AM. Providing the DAB service, the local multiplex called Swansea SW Wales is