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
London Organising Committee of the Olympic and Paralympic Games not responsible for building permanent venues, reported spent £2.38 billion since winning the bid in 2005 and generated £2.41 billion. On 30 May 2013 it handed back to the government, Britain's Olympic committee and other beneficiaries a surplus of £30 million from the 2012 Games. The British Olympic Association received £5.3 million, the British Paralympic Association £2.6 million, and £20 million was returned to the Department for Culture, Media and Sport. On 6 July 2005 the International Olympic Committee (IOC) chose London as the host city for the 2012 Olympic Games. After the success of the London bid, LOCOG was