In Copenhagen on October 2, 2009, Rio de Janeiro had an overwhelming victory in the host city elections for 2016. The city will be the first South American host in the history of the Games.
Chicago with the US President Barack Obama and his wife Michelle as part of the presentation were the favourites. But they failed to inspire and to many people's disbelief Chicago went out in the first round of voting only securing 18 of a possible 94. Madrid had 28, Rio 26 and Tokyo 22.
Tokyo, who are the only city to have hosted previously back in 1964, went out in round 2 with 20, while Rio had 46 and Madrid 29.
Madrid who went very close to winning the 2016 Games from London secured 32 votes in the final vote with Rio dominating with 66.
Rio de Janeiro had the enchanting story - of about 400 million sports-mad people on a giant untapped and vibrant continent yearning, hoping, that the Olympics finally might come to them.
They confronted the crime problem in Rio head on, promised that with their vibrant economy finance is no problem and stressed it is South America's time - 'It is time to address this imbalance'.
At the famous Copacabana beach where beach volleyball will be play 50,000 residents cheered at the result and the partying went for days.
Rio de Janeiro proposes to stage the Games in four clusters around the city, with most of the venues and the Olympic Village in the western suburbs of Barra de Tijuca.
Some venues were built for the Pan American Games.
The biggest project will be the Olympic Park, a development that will include the village and sports venues that are supposed to remain as a training center for athletes from South America.
Opening and closing ceremonies will be held in the famous Maracana Stadium, currently under renovation ahead of the 2014 Football World Cup.
The World Cup was cited as one of the concerns for the Rio de Janeiro bid by an IOC Evaluation Commission that reviewed the four bid cities earlier this year.
The IOC experts were worried that the FIFA event will diminish the marketing potential for the 2016 Olympics. At the same time, preparations for the World Cup are expected to accelerate improvements in Brazil needed for the Olympics.
The budget for infrastructure for the Rio Olympics is $11 billion, the biggest among the four 2016 cities.