My initial interest here was the contrast of ancient and modern – The Tower of London and the Shard.
But… when I got home and started to process this image, I realised that the setting sun had caused some reflections on the Tower’s walls. Looking at it more closely, it dawned on me that they were reflections from passing vehicles, including a double-decker bus.
It’s not the best photo that I’ve ever taken, but it does show that sometimes you don’t see what’s there until you take the time to look properly/reflectively.
(Other, similar images can be found on my Flickr site – if you’re interested.)