Hobart is the capital and most populous city of the Australian island state of Tasmania. With a population of approximately 240,342 (over 45% of Tasmania's population), it is the least populated Australian state capital city, and second smallest if territories are taken into account (after Darwin, Northern Territory). The city is located in the state's south-east on the estuary of the River Derwent, making it the most southern of Australia's capital cities. Its skyline is dominated by the 1271 m Mount Wellington, and its harbour forms the second-deepest natural port in the world, with much of the city's waterfront consisting of reclaimed land. The metropolitan area is often referred to as Greater Hobart, to differentiate it from the City of Hobart, one of the five local government areas that cover the city.