Several years ago a friend and I watched a live performance of Showboat. We were impressed by the incredible backgrounds, which were layered, wonderfully detailed and flying in and out from multiple directions. Afterwards she exclaimed, "Wow, best performance by a set!".
However, there's nothing quite like the splendid beauty of distant mountains and hills that have been compressed into two dimensions. Whenever I go on one of my photography road trips, I'm always on the lookout for nature's 3D paper art.