The palazzo pubblico frescoes are a series of significant wall paintings located in the Palazzo Pubblico of Siena, Italy, created during the Italian Proto-Renaissance. These frescoes, particularly those by Ambrogio Lorenzetti and Simone Martini, depict various themes including allegories of good and bad government, emphasizing the moral and civic responsibilities of rulers. They represent a turning point in the use of narrative and social commentary in art, reflecting the evolving political and cultural landscape of the time.