Sydney is the capital city of Australia and the state capital of New South Wales, with over 4 million inhabitants. It is built around Sydney Harbour, featuring the iconic Sydney Opera House and Harbour Bridge. Sydney has a temperate climate and is one of the most multicultural cities in the world, leading global rankings for quality of life. Some of Sydney's most notable landmarks include the Barrenjoey Lighthouse, St. James Church, and its extensive public transportation network.