This image depicts a section of the River Thames in London, United Kingdom

This image depicts a section of the River Thames in London, United Kingdom. On the river, a white and black floating barrier or boom extends along the water's surface. The river itself has a moderate ripple pattern. Across the river is a row of buildings with flags on top, partially obscured by bare trees. The sky behind the buildings is filled with clouds, and the overall light suggests it's daytime. An unseen structural element is visible in the top right corner of the frame.