This is some kind of game area in the children's play park. I'm not sure how it works, but I've seen kids playing with a football there and there appear to be sensors in each of the four walls which can detect when the ball makes contact - some kind of goal, I imagine. I haven't seen it getting used very much.
No thunder last night, so my sleep wasn't interrupted. The rain held off today, too, until early evening. The air is now much fresher, which is quite welcome.