Ever since I read Dan Brown's Angels & Demons in 2004(?) I have loved ambigrams. Ambigrams are illustrations of words that from a different perspective appear to be the same word or a different word. They can be made to read as a mirror image or as I have done using rotational symmetry. For each of these you can tilt your head 90 degrees left or right and each will read the same. My favorite part of these two ambigrams is the M in geometry. That M just turned out awesomely.
