Though it wasn't created in-camera, this double-exposure photograph is, nevertheless, breathtaking. Montreal, Quebec-based photographer Michelle Karpman superimposed the two shots - one taken from winter and one from the summer - using Photoshop. She then called it Sunshine On My Mind. On a rainy or snowy day like this, it's just perfect!
You can purchase a 12x12 print of it on Etsy.