The round window in the apse, an outstanding masterpiece made between 1287 and 1289-90 on a drawing by Duccio di Buoninsegna and currently replaced by a copy, is the first element in the cathedral that captures the visitor’s eye. The three central panels illustrate the Dormition, Assumption, and Coronation of the Virgin, clearly showing the goal of every person’s journey, the Kingdom of . . .