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, Toronto bordering the Humber river. Swansea also contains a large number of semi-detached houses and bungalows located mostly in the centre of the neighbourhood. The typical house of the area was built between 1905 and 1935. The area of the former Swansea Works area is considerably newer, except for some of the original workers' homes. The Queensway was built in the 1950s through the Swansea Works lands. The area to the south was retained for industry and the area to the north was redeveloped with apartment buildings and townhome developments. The area of the actual factory site has been redeveloped since