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 three events in his sport. Alberto Tomba, an Italian skier, made his Olympic debut by winning both the giant slalom and slalom. East German Christa Rothenburger won the women's 1,000 metre speed skating event. Seven months later she would earn a silver in track cycling at the Summer Games in Seoul, to become the only athlete to win medals in both a Summer and Winter Olympics in the same year. The 1992 Winter Games were the last to be held in the same year as the Summer Games. They were hosted in the French Savoie region, with 18 events held