Bow Lake is the first lake to enter Banff National Park. The water surface is broad, the color of the water is blue with green, green with blue. The distant peaks set off the first surprise for visitors who had just entered Banff Park. Bow Lake is on the roadside. You can watch and take pictures at close range. The weather in Banff Park is changeable. After a while, it rains and shines and meets the rainbow.