Escher's Waterfall is based on the Impossible Triangle of his friend and admirer  Roger Penrose,  the British mathematician and physicist. In fact, Escher incorporated not one but two Penrose tribars, as they are now known, in his lithograph.

exploring the Elements and Principles of Art along with different media and techniques such as pencil, acrylic paint, watercolor, printing, and some sculpting. Students are expected to keep an open mind and creative spirit. Students are also expected to develop their own ideas.