Fireworks light up Tower Bridge as the London 2012 Olympics

LONDON, ENGLAND - JULY 27: Fireworks light up Tower Bridge as the London 2012 Olympics opening ceremony takes place on July 27, 2012 in London, England. Athletes, heads of state and dignitaries from around the world have gathered in the Olympic Stadium for the opening ceremony of the 30th Olympiad. London plays host to the 2012 Olympic Games which will see 26 sports contested by 10,500 athletes over 17 days of competition. (Photo by Peter Macdiarmid/Getty Images)