Summer Olympic Games demand for tickets to all levels of each event, there was controversy when seats set aside for sponsors and National Delegations went unused in the early days. A system of reallocation was put in place so the empty seats were filled throughout the Games. Rio de Janeiro, Brazil hosted the 2016 Summer Olympics, becoming the third city in the Southern Hemisphere to host the Olympic Games after Melbourne, Australia, in 1956 and Sydney, Australia, in 2000, and the first South American city to host the Olympics. The preparation for these Games was overshadowed by controversies, including the instability of Brazil's
Olympic symbols no evidence that Coubertin had intended it (the quotation above was probably an afterthought). Nevertheless, the logo of the Association of National Olympic Committees places the logo of each of its five continental associations inside the ring of the corresponding colour. The Olympic flag was created by Pierre de Coubertin in 1925. There are specific Olympic flags that are displayed by cities that will be hosting the next Olympic games. During each Olympic closing ceremony in what is traditionally known as the Antwerp Ceremony, the flag is passed from the mayor of one host city to the next host, where