A few years ago we made an unexpected trip to London when a colleague who was scheduled to report on our research from the response to Hurricane Katrina was injured and could not attend the conference. At the last minute, I filled in for him so we did not have to cancel the presentation. We had spent several years on the research and it was pending publication. We only had a few days there, and the quickest way to see much of anything was to do the hop on-hop off tour bus. I confess to doing more of the hop on than the hop off, but I was fascinated by the variety of clock "architecture" present in the city.