these parks contain some of the most beutifull mountains in the world. there many hiking trails to walk on, each one is different to the others. i have visited these parks twice, and both times they have been great. lake Louise is crowded around the viewpoint, but if you go on the trails, there are very few people; and lake Louise is stunningly beautiful. my favorite park is Yoho, it is less crowded then a lot of the others, and has the incredible Takakkaw Falls, one of the highest waterfalls in Canada. these are some of the oldest national parks on earth (created in the late 1800s). enjoy your trip!