Balcony, 1945

Escher wrote that this print "gives the illusion  a town, of house blocks with the sun shining on them. But again it's a fiction, for my paper remains flat. "In a spirit of deriding my vain efforts and trying to break up the paper's flatness, I pretend to give it a blow with my fist at the back, but once again it's no good: the paper remains flat, and I have only   created the illusion of an illusion.   However, the consequence of my blow is that the  balcony in the middle is about four times enlarged in comparison with the bordering objects."