Even though some call it a giant bathtub, there's no denying the beauty of Lake Minnewanka, an aquamarine glacial lake cradled by massive peaks all around that is the largest lake in Banff National Park. It used to be called "Lake of the Water Spirits" by the Stoney Nation. Early Europeans found it equally intimidating, calling it "Devil's Lake." A 2-hour cruise is relaxing and a nice way to come to your own conclusion on the pros and cons of Minnewanka. Your boat offers 360 degrees of windows for appropriate wilderness gawking, but your boat will also likely be packed to claustrophobia-inducing capacity. Be sure to make reservations, especially in high season. There are five sailings a day in summer; buses leave from Banff every day specifically for this purpose, from the bus station and major hotels.