The Luxton Museum is essentially the story of the Alberta Aboriginal people with a strong emphasis on the Cree, Blackfoot, Blood and Stoney peoples. The displays, though a bit dusty, are pretty informative and contain some impressive eagle-feather headdresses and a life-size replica of a rather macabre sun dance ceremony.
You'll probably learn an interesting fact or two here, but the museum won't delay you more than 30 minutes, making the $10 entrance fee a little steep.