Starting from the back, this wall presents a panel painting of another great Sienese Saint, Bernardine, painted by Pietro Aldi in 1872.

Next is the first of three large scenes, begun by Riccio and finished by Arcangelo Salimbeni in 1578, whose subject is The Mystical Marriage of Saint Catherine, a testament to her profound union with Christ. The depiction reflects the version of the event . . .