14 August 2012
Last updated at 11:44
With the Olympic flag now on Brazilian soil, attention turns to the next host city, Rio de Janeiro, and the hard work of delivering the 2016 event.
The city is already upgrading its infrastructure to stage some of the matches for the Fifa 2014 World Cup. The Maracana Stadium has to be ready in time to host football's Confederations Cup next year.
The world famous stadium will host the Games' opening and closing ceremonies as well as the football medal events. The nearby Maracanazinho Stadium, which forms part of Maracana complex, will be the venue for the 2016 volleyball competitions.
The Joao Havelange Stadium, popularly known as "Engenhao", will hold the athletics events.
Rio de Janeiro's state government says that nearly two-thirds of the renovation at the Maracana has been completed.
The budget for the stadium's renovation is some $425m (£271m) with 5,500 workers divided in two 10-hour shifts, seven days a week. But strikes have so far cost the project 20 days of lost construction.
There have also been protests by local residents who are facing relocation. Some 4,000 people are going to lose their homes to make way for the Olympic Park, campaigners say. Rio authorities say there will be extensive consultations.
The Sambadrome, where Rio's extravagant samba schools parade each year during Carnival, will see the climax of the marathon with room for 30,000 spectators to line the 700m avenue.
The sambadrome, designed by architect Oscar Niemeyer in 1984, will also host archery events.
The port area of Rio de Janeiro is also being renovated to accommodate a new road system that includes two tunnels.
Rio de Janeiro, crammed between seafront and hills, has long seen its roads clogged by vehicles. The new road system will significantly ease the pressure, officials say.
The Barra da Tijuca neighbourhood will host more than half of the events at the Rio 2016 Games. It and three other Olympic zones will be connected by the new transport system. Metro journeys from Ipanema to Barra should take 15 minutes.
Other venues include the Marina da Gloria, part of Flamengo Park, which will be home to a number of the sailing events.
Flamengo Park was built in the 1960s and will host the road cycling and walking competitions in the Olympic Games and the marathon and cycling competitions in the Paralympics.
Copacabana will also see sailing, as well as rowing, triathlon, and of course beach volleyball on its famous beach.
Brazil, which is set to spend a total of $14bn of public funds on the World Cup, will also devote a further $11.5bn on the Olympics. Their city is undergoing major changes but the daily workout for some Rio residents seems set to continue.