In the central nave there are stained glass windows depicting various saints, including John Bosco, while three other ones in the counter-façade represent Mary Immaculate appearing in Lourdes (holding a rosary) and at its sides the saints Pius X (a personal friend of the founder of the Orionine Fathers as well as a great benefactor of the Order) and don Orione. Other saints – including Philip Neri and the martyr Lawrence – are frescoed in the chapels at the end of the side naves.
