This is the old highway through the Rockies and I am so glad they left it open to the public. It is a nice quiet drive where you will most likely come across some wildlife of some sort. On top of that, there are about a dozen stops of interest along the way, that explain things about the rockies to you. As well there is Johnston Canyon, a wonderful little hike into a canyon where they actually put gantry's onto the side of the canyon and you walk along them above the river.
This is THE best way to travel from Lake Loise to Banff, it is much better than flying along the Trans Canada Highway and trying to take in all the beauty.