Newcastle upon Tyne is a city and metropolitan borough of Tyne and Wear, in North East England. Situated on the north bank of the River Tyne, the city developed from a Roman settlement called Pons Aelius, though it owes its name to the castle built in 1080, by Robert II, the eldest son of William the Conqueror. The city grew as an important centre for the wool trade and it later became a major coal mining area. The port developed in the 16th century and, along with the shipyards lower down the river, was amongst the world's largest shipbuilding and ship-repairing centres. These industries have since experienced severe decline and closure, and the city today is largely a business and cultural centre, with a particular reputation for nightlife.