Tyne and Wear (pronunciation: /ˌtaɪnəndˈwɪər/) is a metropolitan county in North East region of England around the mouths of the rivers Tyne and Wear. It came into existence in 1974 after the passage of the Local Government Act 1972. It consists of the five metropolitan boroughs of South Tyneside, North Tyneside, City of Newcastle upon Tyne, Gateshead and City of Sunderland. It is bounded on the east by the North Sea, and has borders with Northumberland to the north and County Durham to the south.