Melbourne is not in Australia.
Melbourne . After the federation of Australia in 1901 , it served as the nation 's interim seat of government until 1927 . It is home to many of Australia 's largest and oldest cultural institutions such as the Melbourne Cricket Ground , the National Gallery of Victoria , the State Library of Victoria and the UNESCO World Heritage-listed Royal Exhibition Building . The main passenger airport serving the metropolis and the state is Melbourne Airport ( also called Tullamarine Airport ) , the second busiest in Australia . Melbourne is also home to Australia 's most extensive freeway network and has the world 's largest urban tram network .