Along the way, we passed under the Tower Bridge. It's a pretty cool view passing directly under it.
Sorry about the poor quality of the photos on this trip. I didn't bring my real camera - just the camera built into my iPhone. It's always a trade off of the convenience of less baggage to worry about vs. the lack of having good control of taking a picture of an interesting scene. For this trip I opted for less baggage. On the river trip today I definitely regretted not having a camera with a decent lens. There was lots of interesting architecture along the way.