150 days to London Olympics... 

 A barge carrying a magnificent set of giant Olympic rings was launched on the London river to mark 150 days until the start of the Games. Measuring 11 metres (36ft) high and 25 metres (82ft) wide, the glowing display sailed regally through the city centre on a barge pulled along by a tugboat.

It was waved through Tower Bridge by Boris Johnson, who declared 2012 a 'thrilling' year for 'one of the most exciting cities on earth'.
The multi-coloured rings, which were illuminated from below and had white LED lights on the reverse, began their journey down the Thames in pitch darkness.
As dawn broke, the Rings on the River passed famous landmarks from the former British naval light cruiser HMS Belfast to sparkling skyscraper The Shard.
They will now go into storage until the start of the Olympics, when they will again take a trip down the Thames.

Sailing event: Five giant Olympic rings float past Tower Bridge through the centre of the capital

Glow-slow: A tug boat pulled the barge transporting the brightly-lit 11m (36ft) tall and 25m (82ft) wide rings

History in the making: The rings herald a crucial year for Britain as they pass the former British naval light cruiser HMS Belfast and skyscraper The Shard

Read more: http://www.dailymail.co.uk/news/article-2107595/Huge-London2012-Olympic-logo-floats-Thames-mark-150-days-go.html#ixzz1njnCVVMQ