Somebody went to some length to erect this structure in a park:
Olympus Stylus 1s, 60mm, ISO100, f5.6, 1/500s
I had no idea what it was in aid of, and nor had the other bystanders.
As usually happens in such circumstances, many theories were put forward emphatically and with great aplomb, because nobody wanted to admit they hadn't got a clue what it was for or how it worked, if at all.
It was much like being at an economics conference, only cheaper.