So Calgary has something here that every Canadian urban centre should be jealous of.
We saw this listed in a tourism guide at the hotel but didn't think much of it. We stumbled on it during our wandering around and were very pleasantly surprised. It was a park in the middle of a mall. There were huge planters, living walls, koi pond a quite a few water features.
Despite being indoors everyone there was using it as if it were an outdoor park. Kids were playing on the jungle gym, people were sitting around the planters and under the trees eating lunch and everyone was enjoying watching the world go by.
Calgary has a great little gem here.