This month it's three years to go until the 2012 Games begin in London.
Construction work in east London is well on its way. The bowl of the 80,000-seat stadium has risen and so has the budget: from £2.4 billion to £9.35 billion.
We want to know what you think about the Olympics.
Do you think it's a good thing for the capital?
Are you happy with progress so far?
What would you like to see happening over the next three years and after the event?
Do you walk past the site every day or are you yet to see any signs that London is the next Olympic host city?
Please contact us with your thoughts, ideas and stories and we'll invite some of you to join us in east London to film for a special BBC London TV programme.
You can get in touch with us