City of Blacktown in the context of Hawkesbury River County Council

Greater Western Sydney (GWS) is a large region of the metropolitan area of Greater Sydney, New South Wales (NSW), Australia that generally embraces the north-west, south-west, central-west, far western and the Blue Mountains sub-regions within Sydney's metropolitan area and encompasses 11 local government areas: Blacktown, Blue Mountains, Camden, Campbelltown, Cumberland, Fairfield, Hawkesbury, Liverpool, Parramatta, Penrith and Wollondilly. It includes Western Sydney, which has a number of different definitions, although the one consistently used is the region composed of ten local government authorities, most of which are members of the Western Sydney Regional Organisation of Councils (WSROC). The NSW Government's Office of Western Sydney calls the region "Greater Western Sydney".

Radiocarbon dating suggests human activity occurred in the Sydney metropolitan area from around 30,000 years ago. The Darug people lived in the area that was greater western Sydney before European settlement regarded the region as rich in food from the river and forests. Parramatta was founded in 1788, the same year as Sydney, making it the second oldest city in Australia. Opened in 1811, Parramatta Road, which navigates into the heart of greater western Sydney, is one of Sydney's oldest roads and Australia's first highway between two cities – Sydney central business district (CBD) and Parramatta, which is now the sixth largest business district in Australia. Rapid population increase after World War II saw the settlement of many ex-service men and migrants in the greater west, making it one of the most urbanised regions in the country and an area of growing national importance.

Prospect is a suburb of Sydney, in the state of New South Wales, Australia. Prospect is located 32 kilometres (20 mi) west of the Sydney central business district in the local government area of the City of Blacktown and a small part of Cumberland City Council, is part of the Greater Western Sydney region. One of the oldest suburbs in Sydney, Prospect takes its name from the prominent nearby landmark of Prospect Hill - from the top of which people could get a prospect of (see a great distance) the surrounding countryside.

Initially a settlement for emancipated convicts, it later became a village. Since colonisation, settlers cleared larger areas of land to raise livestock, and to build churches, inns, schools, shops and a large reservoir. Naturalist Charles Darwin visited Prospect in January 1836, to observe the geology.