I recently watched a well-done documentary on the architectural marvel, the Parthenon. Feel free to watch the whole program on PBS’s website. If you do, you can skip this post, because I’ll paraphrase just a part of the documentary here that deals with illusions.
As you can see from a close look at this picture, the columns are made up of multiple stacked “drums.” Recently, while the Acropolis Restoration Project was attempting to rebuild the 46 columns, it was discovered that the drums had very slightly different diameters. This finding suggested that the columns were not straight, but were curved (wider at the bottom). In fact, very few of the parts of the temple had a straight line to it, even the foundation was “bowed.” (more…)