Brisbane /ˈbrɪzbən/ is the capital and most populous city in the Australian state of Queensland, and the third most populous city in Australia. Brisbane's metropolitan area has a population of 2.3 million, and the South East Queensland urban conurbation, centred on Brisbane, encompasses a population of more than 3.4 million. The Brisbane central business district stands on the original European settlement and is situated inside a bend of the Brisbane River, about 15 kilometres (9 miles) from its mouth at Moreton Bay. The metropolitan area extends in all directions along the floodplain of the Brisbane River valley between Moreton Bay and the Great Dividing Range. The metropolitan area sprawls across several of Australia's most populous local government areas (LGA), including the City of Brisbane, which is by far the most populous LGA in the nation. The demonym of Brisbane is Brisbanite.One of the oldest cities in Australia, Brisbane was founded upon the ancient homelands of the Turrbal and Jagera peoples. Named after the Brisbane River on which it is located, which in turn was named after Scotsman Sir Thomas Brisbane, the Governor of New South Wales from 1821 to 1825. The area was chosen as a place for secondary offenders from the Sydney Colony. A penal settlement was founded in 1824 at Redcliffe, 28 kilometres (17 mi) north of the central business district. That settlement was soon abandoned and moved to North Quay in 1825, and opened to free settlement in 1842. The city was marred by Aboriginal conflict between 1843-1855, and development was partly setback by the Great Fire of Brisbane, and the Great Brisbane Flood. Brisbane was chosen as the capital when Queensland was proclaimed a separate colony from New South Wales in 1859. During World War II, Brisbane played a central role in the Allied campaign and served as the South West Pacific headquarters for General Douglas MacArthur.Today, Brisbane is well known for its distinct Queenslander architecture which forms much of the city's built heritage. It is a popular tourist destination, serving as a gateway for visitors to the state of Queensland. The city has hosted several large cultural, international and sporting events, including the 1982 Commonwealth Games, World Expo '88, the final Goodwill Games in 2001, and the 2014 G-20 summit.