About the pictures: the rain made the roof fall in (in a building where no one was using the upper two floors for a long time, so if there were signs this was coming, no one was there to note them, perhaps). Rain did not damage the walls.
The demo team knocked the top floor walls into the building during the night (till 3 am, i watched) and we woke up to the bottom two pictures. more sky for us. also a major inconvenience or ten, but the upside is more sky, for the time being.