To mark the day we have some fantastic aerial photos of the Olympics Park, which looks like it's in pretty good shape indeed.
The gleaming buildings make really impressive constructions. Over 30 buildings were demolished to make way just for the 80,000-seat Olympic Stadium alone.
LOCOG (London Organising Committee of the Olympic Games) also unveiled the motto for the Games: 'Inspire a generation', reflecting the promise made when London bid for the Games – and launched the latest spectacular installation of the Olympic Rings at the Royal Botanic Gardens, Kew, west London. The rings are 50m long, made up of 20,000 plants and are visible from the Heathrow flight path.
The famous torch relay starts off the 70-day UK tour from Land's End on May 17. And then the fun will begin for the biggest sport event in British history.