Richest in terms of pure nature
This is the "crown jewel" off the Canadian Rockies. Lake O'Hara and the surrounding areas aer some of the best-conserved areas anywhere in the Canadian Rockies. It's found within Yoho National Park and, although it's less-visited than more popular Banff and Jasper, it is without a doubt the richest in terms of pure nature.7
In fact, Lake O'Hara is only a few miles from the world-famous Lake Louise, an iconic place in the Canadian Rockies. It's hard to believe that the crowded trails of Lake Louise are just on the other side of the mountain from the practically virgin wilderness surrounding Lake O'Hara. Part of the reason for this is that access to Lake O'Hara is restricted for motor vehicles. If you want to arrive, you either need to make the 5 miles hike or use one of the few (4 in summer) daily buses which operate from the office of Alberta National Parks.