They have a photo contest every year and the photos just keep getting better and better:
http://travel.nationalgeographic.com/photo-contest-2015/gallery/winners-outdoor-scenes/4 That particular photo is one of a dozen or so I downloaded, and I love them all so much that I switched back to xfce4 (yet again) because it has a built-in automatic wallpaper slide-show function (like kde) and I have it set to 10 minutes rotation time :) You need to enjoy the simple pleasures while banging your head against your expensive computer terminal...