That's awesome. I just dragged my 5 year old son over to take a look. He was quite impressed and said it was really cool!
this is gonna sound like the most bullshit excuse ever but i can't remember where they were. then my dog ate the list i wrote down. okay so that last part was a lie. although it isn't exactly an optical illusion, that painting thing where it goes forward in a loop (i can't explain it) was pretty cool