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 than 2.5 million people Vancouver is the largest metropolitan area to ever host a Winter Olympic Games. Over 2,500 athletes from 82 countries participated in 86 events. The death of Georgian luger Nodar Kumaritashvili in a training run on the day of the opening ceremonies resulted in the Whistler Sliding Centre changing the track layout on safety grounds. Norwegian cross-country skier Marit Bjørgen won five medals in the six cross-country events on the women's programme. She finished the Olympics with three golds, a silver and a bronze. For the first time, Canada won a gold medal at an Olympic Games