Right. First of all, the answer to week 2 – that picture is, of course, part of a street lamp. I did warn you that the angle may be unusual. Here, I needed to hang upside down from a helicopter, or rotate the image. In the event, the latter was easier.
And now for the new picture. Here we go, so start guessing, Leave your guesses as replies, and, if you like this idea for blog posts, please tell your friends (e.g. tweet/retweet on Twitter.) Thanks for your interest.