Prince of Wales Hotel - Waterton Lakes National Park
Looking across Middle Waterton Lake. It is uncommon to get such a reflection at midday at Waterton Lakes National Park. There is almost always a westerly wind blowing through the mountains, resulting in ripples and/or whitecaps in the lake.
Upper Waterton Lake is the other side of the Hotel, and heading south on that lake you cross the International Border, going into Glacier National Park in Montana.