Faint wall decor

I passed this on the way to the store last night. You can't really make it out,  but it is an image of a tree which is projected onto the building from a lamp post. They cut out one of the facets and inserted this image. It is such a simple decorative solution. The lamppost is great as well, think of it a la Narnia on the other side of the wardrobe at the end of the woods.