Sydney, the capital of New South Wales and one of Australia's largest cities, is famous for its harbour-side Sydney Opera House, featuring a distinctive sail-shaped design. The massive Darling Harbor and the smaller Circular Quay harbor are hubs of riverside life, with the arched Sydney Harbor Bridge and renowned Royal Botanic Gardens close by. The Sydney Tower's outer platform, the Skywalk, offers 360-degree views of the city and suburbs.