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 City Centre sq. ft) have been achieved here. The City Centre Strategic Framework notes that this demonstrates that a commercially viable office market can eventually be developed in Swansea city centre. Swansea Market, the Quadrant Shopping Centre and the St. David's Shopping Centre are situated in the middle of the city centre. The Quadrant Centre opened in the late 1970s and dominated by chain stores. It includes an adjacent multi-storey car park that opens directly into Debenhams on one floor. Swansea bus station is located on the western side of the centre, and Swansea Grand Theatre is next door to the station