The motto for the London Olympics has been unveiled: "Inspire a generation." The slogan was revealed as part of the events marking the 100-day countdown to the opening ceremony.

April 18 marks the 100-day countdown to the July 27 opening of 2012 London Olympics. Sebastian Coe, chairman of the London Organizing Committee of the 2012 Olympic Games, is working on the final touches for the London Olympics that he hopes will make the difference between "a good and a great games"

100 days to go. LOCOG, the London Olympic organizing committee, reaffirmed that the city is ready for its third Olympic Games. Millions of people around the UK are getting ready to welcome the world to London in 100 days time, and a number of events are being held to mark the milestone.

At Weymouth and Portland, the venue for the Olympic and Paralympic Sailing competitions, a giant sandcastle has been built featuring the Olympic Rings. In west London, a floral display resembling a giant set of Olympic rings was unveiled at Kew Gardens. The floral rings, measuring 15.5 metres in circumference, can be seen from the Heathrow flight path.

It was also announced that 40 'Coubertin Oak' trees are being planted at venues around the UK. The trees were grown from acorns taken from an oak planted in 1890 during the visit of the founder of the modern Olympic Movement, Pierre de Coubertin, to the Wenlock Olympic Games.

Meanwhile, tourists in London braved heavy rain, gathering in Trafalgar Square to see the Olympic clock, which is counting down to the opening ceremony.