If you were to compile a list of islands ranked by the ratio of their size to the number of pictures taken of them, this tiny speck of land in the middle of Maligne Lake could well take the prize. :) It is sufficiently famous that it has become the "turnaround point" for boat tours of Maligne Lake, roughly eight miles from the boat house on the lake's northwest shore. It really is a beautiful place, though unfortunately the lighting conditions were rather humdrum at the only time we were able to get a tour. (Like many locations, it is best photographed at sunrise, but you'd have to paddle there yourself and camp overnight to see it at that hour.)
What's really ironic about Spirit Island is that technically it isn't an island at all. It's connected to the mainland by a tiny strip of land, so it's actually a peninsula.