Well, there won't be much trouble finding a mountain scene..... Here are a few of my favorite locations in the area (I live nearby)
1. Sunrise at Castle Junction (Just east of Lake Louise on Hwy 93 at the river)
2. Elbow Falls (East of Canmore and along the Bragg Creek Road)
3. Johnson Canyon (along Hwy 1A near Lake Louise) This can be a bit icy to walk in winter, crampons are your friends... Here are the upper falls.
4. Sunrise at Vermillion Lakes (just outside Banff)
Hope this helps and that you have a great time!