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 with the A48 before continuing through mid Wales and terminating at Chester. The A4067 connecting Mumbles with the city centre and continuing up the Swansea Valley towards Brecon is also a dual carriageway for much of its route through Swansea. Other notable local roads include the A484, which provides a link from Fforestfach west to Llanelli, and the A4118, the main route westwards from the city centre across Gower to Port Eynon. Swansea railway station is located 10 minutes from Swansea bus station by foot. Services calling at Swansea operate to Llanelli, Carmarthen, Milford Haven and Haverfordwest to the west,