London is sending its final plans to the International Olympic Committee on Monday, as the race to host the Games in 2012 nears its end.
It's competing against Paris, Madrid, Moscow and New York.
London's plans include using Wembley, Wimbledon, the Dome and Hyde Park as well as lots of new buildings and venues in the east of the city.
The IOC will visit the cities that want to host the Games in February and March before choosing in July.
Paris is favourite to host the Games, with London coming in third.
But Sebastian Coe, who's in charge of London's bid, says they have "narrowed the gap quite dramatically" since the final five were announced.