The Olympics is the largest international multi-sport event, split into a Winter and Summer event, held every four years, featuring athletes from all over the world competing in various sports. The event is one of the most prestigious sporting events in the world. The Olympics feature a wide range of sports, including athletics, swimming, gymnastics, cycling, and football in summer, and skiing, snowboarding, and ice hockey in winter. The event has featured numerous famous athletes, such as Usain Bolt, Simone Biles, Lionel Messi, Michael Phelps and Muhammad Ali. Recent Summer hosts include Tokyo, Japan; Rio, Brazil; London, UK; and Beijing, China and recent Winter hosts include Beijing, China; Pyeongchang, South Korea; and Sochi, Russia.