For two centuries, the city-republic of Siena was home to a brilliant succession of painters who produced some of the greatest masterpieces of all time. This overview by Timothy Hyman is an essential introduction to this extraordinary artistic tradition. Taking a broadly chronological approach, it moves from the fourteenth-century Siena of Duccio, Simone Martini, and the Lorenzetti brothers to the fifteenth-century city of Sassetta and Giovanni...