Worm by Andreas Aronsson
Take a look at this twisted figure that its creator Andreas Aronsson calls an impossible worm. If you study the multi-colored shape in detail, you will notice that it is really just five interconnected impossible triangles (also known as a Penrose triangle). On his blog, Andreas notes:
I’m not sure why I like this one so much, it’s kind of simple while still having interesting relations between the different levels. A continuation of the basic tribar.
I agree, it’s simple… but is is very interesting.
(via Andreas Aronsson)