Sunderland is a port city in Tyne and Wear, England. It is the City of Sunderland's administrative centre and in the historic county of Durham. The city is 10 mi from Newcastle upon Tyne and is on the River Wear's mouth to the North Sea. The river also flows through Durham roughly 12 mi south-west of Sunderland City Centre. It is the only other city in the county and the second largest settlement in the North East after Newcastle upon Tyne.