The Palazzo Pubblico (town hall) is a palace in Siena built originally to house the republican government, consisting of the Podestà and Council of Nine. Nearly every major room in the palace contains frescoes. The most famous of the secular frescoes are three panels in the series on government in the Hall of the Nine (also known as Sala della Pace) by Ambrogio Lorenzetti. These frescoes are collectively known as The Allegory of Good and Bad Government. - Wikipedia