Our first attempt at hiking the Rockies in the snow didn't go all that well - the temperature was significantly colder than predicted, Terry and I weren't properly attired, and I also realized a coat is too long for proper hiking and I do need a warm jacket.
Troll Falls is a recommended easy half-day trip from Calgary (between the 2 hour round trip and the quick jaunt to the falls). It is also highly recommended as a winter hike.
We almost didn't get there with all the stops the kids made to play in the snow. Seriously, the first kilometer took about 45 minutes. When the sign said it was only 0.3km to go, we got hardhearted and said no stopping until we get there!
It is early enough in the season that we could see water still running down the falls on the inside of the ice. From the front was all ice, and from the back it was all ice, but in the middle water ran. Our cameras were unable to capture this.
Climbing up the side of the falls is a recommended treat and Alex did not need to be told twice. The only regret is that we didn't have ice cleats, and the icy area just behind the falls was way too slick to venture towards without them.