The Beijing Olympics is over and now everyone is talking about London 2012.
But did you know that not all the action is taking place in the capital city?
Team Newsround has been around the UK to find out more.
Sailing: Weymouth, Dorset
Ricky's been to Dorset to find out more about the sailing venue.
Adam and Ricky
The GB sailing team bagged loads of medals in Beijing and in four years' time Weymouth and Portland Sailing Academy in Dorset will host the 2012 sailing events.
Sailing fan Adam told Ricky: "I'm really excited about the Olympics coming as I think it will be good publicity for the sailing academy and get a lot more people involved in the sport."
Football: All round the UK!
Gavin went to Scotland's national football stadium, Hampden Park in Glasgow.
Gavin in Glasgow
All footie fans can get excited because in 2012 loads of you will be able to enjoy live Olympic football from grounds all around the UK.
As well as Hampden Park, these include St James' Park in Newcastle, Villa Park in Birmingham, Old Trafford in Manchester and the Millennium Stadium in Cardiff.
Mountain biking: Essex
Ore in Essex
And as there are no mountains for mountain biking in London, it's being held in Essex.
Ore checked out the site in Hadleigh Farm, which is currently a farm!
But it will be transformed into a top biking track by 2012.
Training camps: Northern Ireland
Maddy in Northern Ireland
Maddy went to Northern Ireland, which at the moment is not set to host any events because the people planning 2012 say that's because there isn't yet a stadium or location here that's suitable for development.
But Northern Ireland are hoping to offer training camp facilities for some of the teams taking part.
- Canoe and kayak events are going to take place at a brand new course in Broxbourne, Hertfordshire
- Rowing and some canoeing will take place at Dorney Lake in Eton, Berkshire