The Taj Mahal, a study in extreme symmetry. The structure itself, built from non-porous Indian marble, is built with painstaking exactitude to be almost perfectly symmetrical. The landmark’s grounds follow suit, with surrounding buildings constructed as much to complement the symmetry as to serve as gateways to the mausoleum. I got to see this breathtaking landmark—and to take this picture—for the first time about a week ago, on a six-day visit to India for work.