Durham is a historic city and the county town of County Durham in North East England. The city lies on the River Wear, to the west of Sunderland, south of Newcastle upon Tyne and to the north of Darlington. Founded over the final resting place of St Cuthbert, its Norman cathedral became a centre of pilgrimage in medieval England. The cathedral and adjacent 11th-century castle were designated a World Heritage Site by UNESCO in 1986. The castle has been the home of Durham University since 1832. HM Prison Durham is also located close to the city centre.