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
Cycling at the Youth Olympic Games Cycling at the Youth Olympic Games Cycling has been included in the Summer Youth Olympic Games since their inauguration at the 2010 Summer Youth Olympics, at which one event was held. Unlike the Summer Olympics, track cycling is not icluded, while the program features BMX racing, road cycling and mountain bike racing. At the 2010 Summer Youth Olympics a combined mixed-gender team event with sub-events in the disciplines of BMX, road cycling and mountain biking was held. At the 2014 Summer Youth Olympics instead of competitors competing separately they compete as a team. In the boys' and girls' team events