Summary: What's to see in the Yoho National Park (... that is so close to the Banff National Park)? Make sure to visit the Spiral Tunnels, the Natural Bridge, and the amazing Emerald Lake. Only about 20 minutes West from the Lake Louise - the trip is worth your while. So, if you have before, take a look at another Banff area video ... or watch your first one right now :).
