Underneath the Millenium Bridge

This is a photo from underneath the Millenium Bridge in London. We were on a cruise on the Thames, and when we passed under this famous Bridge, I grabbed a chance to take a photo from underneath.
This is a pedestrian only bridge, that jumped into controversy soon after opening, when it started vibrating dangerously. It was closed within 2 days, and then retro-fitted to make it safer.