While millions of people around the world simply watched and enjoyed the 2012 Olympics, for Brazilian officials it was a vital opportunity to learn what worked - and what maybe did not.
With the next summer Olympics being held in Rio de Janeiro in 2016, Brazil's organisers were in London over the past two weeks to observe how the Games were run.
Brazil's Vice Minister for Sport Luis Fernandes told the BBC that while he was generally very impressed, he had spotted some mistakes to avoid.
"First of all, the UK has done an absolutely fantastic job in organising a very complex endeavour," he says, speaking at the Brazilian embassy in central London.
"At the same time there were some problems, and it is very important that we learn from them."
Source : http://www.bbc.co.uk/news/business-19206308