1 Chapel of San Savino	Pietro Lorenzetti, Birth of the Virgin, 1342
2 Chapel of Sant'Ansano	Simone Martini, Annunciation, 1333
3 Main Altar	Duccio, Maestà, 1308-11
4 Chapel of San Vittorio	Bartolomeo Bulagarini, Nativity
5 Chapel of San Crescenzio	Ambrogio Lorenzetti, Presentation in the Temple, 1342
6 Baptistry on level below