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
Winter Olympic Games suitable course. As this is a focal event that is central to the Games, the IOC has previously not agreed to it taking place a great distance from the main host city. (In opposite to the Summer games where sailing and horse sports have taken place more than 1000 km away) The requirement for a mountain location also means that venues such as hockey arenas often have to be built in sparsely populated areas with little future need for a large arena and for the hotels and infrastructure needed for all olympic visitors. Due to cost issues, the only candidate