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 only country to have earned a gold medal at every Winter Olympics is the United States. Norway leads the all-time medal table for the Winter Olympics both on number of gold and overall medals, followed by the United States, Germany, and the former Soviet Union. A predecessor, the Nordic Games, were organised by General Viktor Gustaf Balck in Stockholm, Sweden in 1901 and were held again in 1903 and 1905 and then every fourth year thereafter until 1926. Balck was a charter member of the IOC and a close friend of Olympic Games founder Pierre de Coubertin. He attempted to