Good question. Banff is very near Calgary, making it very easy to get to. It also has a wide variety of the features that make these parks a World Heritage site. You’ll find stunning scenery and plenty of wildlife, but you’ll also find great food and some of the nicest lodging of any of the Canadian Rocky Mountain parks. And you have transit options to and within the park, so you don’t have to have your own vehicle during the peak summer season. Of course, all of this also make it the busiest and most crowded of these parks.