Gerhard Richter

Stained glass window in the Cologne Cathedral, 2007. Image © designboom

Gerhard Richter'sstained glass window in the Cologne Cathedral is a 113 square metres abstract collage of 11,500 pixel-like squares in 72 colors, randomly arranged by computer (with some symmetry), reminiscent of his 1974 painting "4096 colours". Cardinal Joachim Meisner did not attend the window's unveiling; he had preferred a figurative representation of 20th century Christian martyrs and said that Richter's window would fit better in a mosque or prayer house.