Sienese School
The name "Definitorio" refers to the Capitular Hall (1498), on whose end wall is a fresco of "Madonna with Child and Saints" by Matteo Ripanda (16th century); the hall houses a small museum of Sacred Arts, with works by Segna di Bonaventura ("Madonna with Child"), the Master of Monte Oliveto ("Maestà"), Neroccio di Bartolomeo ("St. Bernardino"), Vincenzo Tamagni ("Madonna with Child") and a fresco portraying "St. Sebastian" by an artist of the Sienese School.