the only time we ever thought to visit the aviation museum was a couple winters ago when the annual Make It! craft show was being held there. we honestly never once considered the museum or that it may actually be interesting, but it was. and if you happen to be or to know someone who's a huge plane or war enthusiast, well then. there's double-triple fun to be had. I even noticed Idle Husband without his phone on more than a few occasions and that's really saying something.
we went on Monday so maybe it's not typical, but we had the entire museum to ourselves. we enjoyed the quarter games and sat inside a small passenger plane without having to stand in line first, and we could take our time enjoying them without being rushed out. those are the museum experiences I particularly enjoy (which is why I never like to visit my absolute favourite alberta museum in the summer -- well, that and the scorching heat).
The have really wonderful vignettes of animals native to Alberta. They look so real! 
This is Spammite. The rarest of the stones. Ok, not really, but we thought it had quite the resemblance! 
Native history, of course.