Perth is the capital and largest city of the Australian state of
Australia. It is the fourth most populous city in Australia, with an estimated population of 1.83 million living in the Perth metropolitan area. Part of the South West Land Division of Western Australia, the majority of the metropolitan area of Perth is located on the Swan Coastal Plain, a narrow strip between the Indian Ocean and the Darling Scarp, a low coastal escarpment. The first areas settled were on the Swan River, with the city's central business district and port (Fremantle) both still located on the river. Perth's metropolitan area is formally divided into a number of local government areas, which themselves consist of a large number of suburbs, extending from Two Rocks in the north to Rockingham in the south, and east inland to The Lakes.
Perth was originally founded by Captain James Stirling in 1829 as the administrative centre of the Swan River Colony, and gained city status in 1856 (currently vested in the smaller City of Perth). The city's population increased substantially as a result of the Western Australian gold rushes in the late 19th century, largely as a result of emigration from the eastern colonies of Australia. During Australia's involvement in World War II, Fremantle served as a base for submarines operating in the Pacific Theatre. An influx of immigrants following the conclusion of the war was followed by a surge in economic activity as a result of several mining booms in the late 20th and early 21st centuries, with Perth becoming the regional headquarters for a number of mining operations located around the state.
As part of Perth's role as the capital of Western Australia, the state's Parliament and Supreme Court are located within the city, as well as Government House, the residence of the Governor of Western Australia. Perth became known worldwide as the "City of Light" when city residents lit their house lights and streetlights as American astronaut John Glenn passed overhead while orbiting the earth on Friendship 7 in 1962. The city repeated the act as Glenn passed overhead on the Space Shuttle in 1998. Perth came 9th in the Economist Intelligence Unit's August 2012 list of the world's most liveable cities.