I looked out of the window the other night and I could tell there was something wrong, but it took me a while to realise what it was.
That's it in the middle; the tallest university building in England, and usually a shimmering pillar of light. Even what looks like a single light in the photo is actually a crane in front of it. (Incidentally, I can currently count nine construction cranes from my attic window. Who's going to stay in all those student flats now?)
Almost exactly two years ago, I took a much nicer photo of the Arts Tower, from Weston Park, with Western Bank Library in the foreground.