Home of the Greater London Authority.
A day spent around Tower Bridge might- should- include adequate time to thoroughly explore the Tower of London, take a tour of Tower Bridge and its overhead catwalks, and the area just across the river where this interesting building stands. I haven't been to London since The Shard went up, but that's not far away, and would probably be seen in this shot if it were made today- this was April 2006.
The hardest part of editing this photo was getting the verticals right. The main object is no help in doing that! Nice thing was the weather, although a few more clouds would have been nice. This is about as straightforward a shot as you'll see from me. Beyond some straightening and standard #LightroomCC adjustments, there was little to do.