Sorry, I did go on a bit about Open House this year. The event is like Architectural Christmas for those of us who love London but, all the same, five days of reporting back might be too much. What most people want to read isn't reports of what they could have seen but didn't, but previews of stuff they could still enjoy. I'd hope that my enthusiasm might make you more likely to take up the Open House gauntlet next year, but that's 360 days away and you'll most likely have forgotten by then. So instead let me nudge you towards two events you might enjoy this weekend, so you can't complain afterwards that you didn't know.