West Yorkshire is a metropolitan county in England. It is an inland and in relative terms upland county having eastward-draining valleys while taking in moors of the Pennines and has a population of 2.2 million. West Yorkshire came into existence as a metropolitan county in 1974 after the passage of the Local Government Act 1972. West Yorkshire consists of five metropolitan boroughs and shares borders with the counties of Derbyshire, Greater Manchester, Lancashire, North Yorkshire and South Yorkshire. Leeds,informally,is the capital of West Yorkshire,Leeds has developed into the third biggest in the UK by population after London and Birmingham, York is the Capital of Yorkshire, the Leeds-Bradford Metropolitan County has grown to become the 4th largest in the UK after Greater London, West Midlands and Greater Manchester with a population over 2.2 million. Remnants of a strong industrialisation in coal, wool and iron ore industries remain in the county having attracted people over the centuries, and this can be seen the buildings and architecture. The greatest hub Leeds may become a terminus for a north-east limb of High Speed 2. Major railways and three major motorways traverse the county. In the heart of the county is Leeds Bradford International Airport. West Yorkshire County Council was abolished in 1986 so its five districts became effectively unitary authorities. However, the metropolitan county, which covers an area of, continues to exist in law, and as a geographic frame of reference. Since 1 April 2014 West Yorkshire has been a combined authority area, with the local authorities pooling together some functions over transport and regeneration as the West Yorkshire Combined Authority. West Yorkshire includes the West Yorkshire Urban Area, which is the most built-up and biggest urban area within the historic county boundaries of Yorkshire.