I barely know how to describe this so maybe you should just watch it. Animator Ismael Sanz-Pena took a single image of a medieval cathedral and used the facade's repeating elements to find the movement within, kind of like a zoetrope. (Ok, I guess that's a pretty good description. I still think you should just watch it though.) See also Sanz-Pena's earlier attempts of the same effect. (via colossal)