toggle sydneyFlag of Sydney Coat of arms of Sydney. Sydney (Dharuk: Gadi, also Warrang) is a city on the east coast of Australia which is the capital city of New South Wales.About five and a half millionTourism in Sydney forms an important part of the city's economy. The city received 12 million domestic visitors and 4.1 million international visitors in year ending June 2019. [1][2] The most