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 After the medals are given out by an IOC member, the national flags of the three medallists are raised while the national anthem of the gold medallist's country plays. Volunteering citizens of the host country also act as hosts during the medal ceremonies, as they aid the officials who present the medals and act as flag-bearers. While in the Summer Olympics this ceremony is held on the ground where the event is played, in the Winter Games it is usually held in a special "plaza". The Olympic Games programme consists of 35 sports, 30 disciplines and 408 events. For example,