Madrid bid for the 2020 Summer Olympics 27 of the 36 required venues already existed. Six permanent new venues needed to be constructed while two temporary venues would have been needed. The venues would comprise two zones. Madrid bid for the 2020 Summer Olympics Madrid 2020 was a bid for the 2020 Summer Olympics by the city of Madrid and the Spanish Olympic Committee. The last time the Olympic Games were hosted in Spain was in 1992 when Barcelona hosted the XXV Olympiad. This was the only time the Olympic Games were staged in Spain. Madrid was nominated by the Spanish Olympic Committee on June 1, 2011.
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