sydneySydney is the capital city of the state of New South Wales and the most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about 80 km (50 mi) from the Pacific Ocean in the east to the Blue Mountains in the west, and about 80 km (50 mi) from Ku See moreFor the first time since 2018, Vivid Sydney lhts up Martin Place and CBD, transforming the city's heart into a hub of Lht, Music, Ideas and Food.