I stopped halfway across the Millennium Bridge and pointed the camera north, which turned out to be the same thing roughly nine thousand other people were doing that afternoon. I looked behind me and there was another group of tourists with their phones raised taking much the same photo I have here. St. Paul’s Cathedral…

This is what Chinatown in London looks like on a Saturday evening in July. A sea of tourists as far as the eye can see, which isn’t very far unless you’re tall.