there are special bus/tour goes to the glaciers, imaging you standing on mountain, with 300 ft ice down your foot, and the ice was moving several centimeters per day.
The time we went, we have a bear mommy taking 2 little bear walk across the road slowly just in front of our car.
Plus, you aren't able to see glacier lakes anywhere. Banff is a most visit.
Calgary city it self is just ok. downtown part is pretty. you will get to see it when you have meeting in downtown.