The interior was also frescoed by Giotto towards 1330, which resumed the "Stories of the Old and New Testament". The content of this cycle of frescoes is almost entirely lost even if there remains a decorative part in the windows reminiscent of those of the Bardi Chapel of the Basilica of Santa Croce in Florence. Furthermore, it is described, in the verses of an anonymous author in a collection of sonnets of 1350, about the whole work of Giotto concerning the chapel.