A diverse city with 32.2% of its metropolitan population being foreign-born, Brisbane is classified as a global city (Beta +), and ranks highly in ratings of liveable cities. Brisbane is known for its distinct Queenslander architecture, and its outdoor dining and cuisine culture. Brisbane was also the origin of the Anzac Day tradition through the works of Canon David John Garland, as well as the Australian constitution by the early statesman, Sir Samuel Griffith. A transportation hub, Brisbane is served by a large suburban rail network and popular bus and ferry networks, as well as Australia's third-busiest airport and seaport. Brisbane has hosted major events including the 1982 Commonwealth Games, World Expo 88 and the 2014 G20 summit, and will host the 2032 Summer Olympics and Paralympics.