The Olympic Rings mounted on Tower Bridge to celebrate the London 2012 Olympics.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/52957117@N04">Dave Catchpole</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/yaketyyakyak/7660970344/">Olympic Rings - Tower Bridge</a>