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
Youth Olympic Games were further pared down to just Moscow and Singapore. Finally, on 21 February 2008, Singapore was declared host of the inaugural Youth Olympic Games 2010 via live telecast from Lausanne, Switzerland, winning by a tally of 53 votes to 44 for Moscow. On 2 September 2008 IOC announced that the executive board had shortlisted four cities among the candidates to host the first Winter Youth Olympic Games in 2012. The four candidate cities were Harbin, Innsbruck, Kuopio, and Lillehammer. IOC president Jacques Rogge appointed Pernilla Wiberg to chair the commission which analysed the projects. As with the Summer Games, the