Lanino consists of eight large frescoes plus two small scenes that are located above the windows: the cycle of paintings was designed to "rotate" around Bernardino Luini's polyptych, which is located in the center of the front wall and which it was created a few decades before this work. The cross vault is decorated with fruit festoons and pairs of cherubs, which were made with a grotesque style. The dominant color of the vault is golden yellow, which deliberately contrasts with the dark blue of the main dome. The subjects painted on the vault of the chapel have a typically 15th century Lombard style. The upper part of the wall, being located under the cornice, is still, from an architectural point of view, part of the vault of the chapel; it is divided into lunettes, which are all frescoed. The lateral lunettes, which are next to the large windows, depict the four evangelists: those on the left saint Matthew and saint John, while the lunettes on the right are saint Mark and saint Luke. On the lunettes of the frontal wall instead the first four doctors of the Church, namely Ambrose, Augustine of Hippo, Jerome and Pope Gregory I. The walls under the cornice were also painted. On the wall to the right of the altar are represented the Marriage of the Virgin, the Visitation of the Blessed Virgin Mary, the Adoration of the Shepherds and the Visit of the Magi. The left wall is decorated with the Journey to Nazareth, the Purification of the Blessed Virgin Mary, the Massacre of the Innocents, the Return to Nazareth and the Dispute. In this last scene there are portraits of Lanino and his helper, who lend their faces to some passers-by[58]. The triumphal arch is instead frescoed with angels in flight and with geometric motifs decorated with fruits. The lapel of the fresco that gives towards the center of the church is instead painted with candelabra of fruit and vegetables, while on the space between the triumphal arch and the pylons of the building there are two roundels that are supported by angels having the face of two prophets. On the back wall, on the sides of the Luini polyptych, are painted saint Roch and saint Sebastian, while on the entrance pillars are depicted Jesus Christ and saint Magnus. The latter are topped by canopies embellished with purple curtains. Also frontally there