Gianni managed to fool me with his submission, have to admit. What I first thought was nothing but interesting CG model of some sort of an engine room filled with pipes, turned out pretty beautiful optical illusion after all. Perhaps I didn’t gave it enough attention at first, or maybe I looked at the fullsize image from too close. Heck, this even made me wonder how many interesting illusions I skipped just because I couldn’t recognize their true nature. Anyhow, be sure to check the pipes below, and hopefully you’ll notice the hidden motive yourselves! Btw, shrunk version below should help…
