Merseyside is a metropolitan county, located in the North West of England. Merseyside is named after the River Mersey and comprises the conurbation by the Mersey estuary centred upon Liverpool. The county was created in 1974 by the Local Government Act 1972. The two parts are linked by two road tunnels, a railway tunnel, and the famous Mersey Ferry. Other districts that are part of the urban area (but not part of Merseyside) are Ellesmere Port and Neston, West Lancashire and Halton, this area is known informally as "Greater Merseyside".