The arches of
                                      the arcade have decorative
                                      keystones that feature elements of
                                      the Württemberg coat of
                                      arms.  These were created by
                                      Joseph Zeitler and include a
                                      hunting horn and a lion with his
                                      tongue sticking out.
                                      
                                      
                                      
                                      From 25 September 2013 to the
                                      beginning of May 2016, the art
                                      building served as the temporary
                                      accommodation of the
                                      Baden-Württemberg Parliament,
                                      while their building, nearby in
                                      the Schlossgarten, was being
                                      refurbished.