restaurants and bars for the day up to a year in advance to ensure they can sample the year's newly released Beaujolais wine. Historian Peter Stead argues that its rise in popularity there can be traced to the city's No Sign Bar, owned in the 1960s by former Wales rugby union captain Clem Thomas, who owned a house in Burgundy and could transport Beaujolais quickly and cheaply to south Wales, and suggests that it reflected Swansea's efforts to "gentrify and intellectualise itself" at the time. In 2015 it was estimated that Beaujolais Day contributed £5 million to the local economy. Welsh language There are many Welsh language chapels in the area. Welsh-medium education is a popular and growing choice for both English- and Welsh-speaking families. Just over 1,600 secondary pupils were educated through the medium of Welsh in 2017. Nearly double this figure, 3,063 pupils are currently educated through the medium of Welsh in the primary sector. The 2014 Swansea Pre-School survey showed that 35% of parents across the City and County of Swansea would select a Welsh education for their children if there was a local Welsh school available to them. 45% of the rural council ward 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. Food Local produce includes cockles and laverbread sourced from the Loughor estuary. Salt marsh lamb, raised in the salt marshes of the estuary, is also a local speciality. Listed buildings 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 14th centuries. Today, the castle is hemmed in by modern buildings. The Tabernacle Chapel at Morriston was built in 1872 by John Humphreys of Swansea. A unique feature is the use of semi-circular arches. The building has been described as the "Nonconformist Cathedral of Wales" and has been listed as Grade I on the basis that it is "the most ambitious grand chapel in Wales, its interior and fittings remain virtually unaltered". The Guildhall is