Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson cheers as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson cheers as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Members of the media work as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson addresses the media as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: A giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: A giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: A giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson addresses the media as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson (C) and Lord Sebastian Coe (R), The Chair of the London Organising Committee of the Olympic Games, unveil a giant set of Olympic rings which are displayed from Tower Bridge as Culture Secretary Jeremy Hunt (L) looks on on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson (L) and Lord Sebastian Coe, The Chair of the London Organising Committee of the Olympic Games, cheer as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson (L) and Lord Sebastian Coe, The Chair of the London Organising Committee of the Olympic Games, cheer as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

File photo: The unveiling of a giant set of Olympic rings which are displayed from Tower Bridge on June 27, 2012 in London, England. / (Photo by Oli Scarff/Getty Images)

LONDON, ENGLAND - JUNE 27: Lord Sebastian Coe, The Chair of the London Organising Committee of the Olympic Games, attends the unveiling of a giant set of Olympic rings which are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Culture Secretary Jeremy Hunt takes a photograph on his mobile phone during the launch of a giant set of Olympic rings which are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Culture Secretary Jeremy Hunt attends the launch of a giant set of Olympic rings which are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Culture Secretary Jeremy Hunt takes a photograph on his mobile phone during the launch of a giant set of Olympic rings which are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson (L) and Lord Sebastian Coe, The Chair of the London Organising Committee of the Olympic Games, cheer as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson (L) and Lord Sebastian Coe, The Chair of the London Organising Committee of the Olympic Games, cheer as a giant set of Olympic rings are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)

Olympic Rings Are Unveiled On Tower Bridge

LONDON, ENGLAND - JUNE 27: Mayor of London Boris Johnson (L), Lord Sebastian Coe (R), The Chair of the London Organising Committee of the Olympic Games, and Culture Secretary Jeremy Hunt unveil a giant set of Olympic rings which are displayed from Tower Bridge on June 27, 2012 in London, England. The rings weigh over three tonnes and measure over 25 metres wide by 11.5 metres tall; they will be illuminated in a light-show every evening during the Games. (Photo by Oli Scarff/Getty Images)