A Pen created at CodePen.io. You can find this one at http://codepen.io/guttentag/pen/FHLkG.

 This is a pure SVG and SMIL animation of M.C. Escher's Waterfall (http://en.wikipedia.org/wiki/Waterfall_(M._C._Escher)) in a modern minimalist 3D style, powered by swirling floating-point numbers. The rhombic dodecahedron changes its shades as it appears to be lit by the platform supporting it, and the codepen sculpture alternates between its regular form and an impossible shape. The water wheel is a series of 14 fins that change their shape as the wheel turns to create the illusion of depth and shading. The falling water itself is simply an animated gradient (I originally had falling binary numbers that spelled out an encoded message, but replaced it when I realized it was forcing my laptop's fan to kick on). I highly recommend viewing this in full page mode (and probably full screen mode), as there is a lot of detail here and the image should scale with the size of your window. As usual, the animation will not work in Internet Explorer because SMIL is not supported.