APSE. On the high altar there is the Immaculate Conception of Pietro from Cortona. The apsidal basin is divided into 7 coffered vaults, which are decorated with the women of the Old Testament who, for various reasons, are traceable to Mary and a foreshadowing of her role for the salvation of humanity.
CHAPELS OF THE NAVE. All the altars are dedicated to Misteries of life of Virgin. Starting from the Nativity, there is then the Presentation of Mary at the Temple, the Annunciation, the Visitation, the Purification and the Assumption.
CUPOLA. The composition of the dome is divided into 6 groups, representing the 6 ages of the world, as explained by Augustine, who refers to the jars of the Wedding of Cana. It is a people of figures united in contemplating in ecstasy the Triumph of the Virgin, the Promised Woman.
NAVE. The vault is formed by four rectangular coffered vaults: three large in correspondence of the chapels and one smaller in correspondence of the choirs and the side doors.