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 Games ceremony the next games host (in 2000) and in 2004, because Greece was hosting the games. Then, while the Olympic Hymn is played, the Olympic flag that was hoisted during the opening ceremonies is lowered from the flagpole and carried from the stadium. In what is known as the Antwerp Ceremony (because the tradition began at the Antwerp Games), the mayor of the city that organized the Games transfers a special Olympic flag to the president of the IOC, who then passes it on to the mayor of the city hosting the next Olympic Games. The receiving mayor then waves the