) is a city in North East England. It is within the County Durham local government district, and is the county town of the larger ceremonial county. The city sits on the River Wear, to the south of Newcastle upon Tyne and to the north of Darlington.Durham is well known for its Norman cathedral and 11th century castle, both 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.