Earlier this week I found this interesting list of esoteric programming languages someone had created. Piet in particular really appealed to me, the programs are images that look like abstract paintings. The language is named after Piet Mondrian, a Dutch artist who painted geometric abstract pieces of art. The image at the top of this post is a valid Piet program, it solves the Towers of Hanoi problem. If you want to play with Piet you can download an interpreter such as npiet.
