The triumphal arch of the transept has an exceptionally lush festoon on its archivolt. Above, there are two putti holding a ribbon that reads DeiparaTriumphanti "to the triumphant Mother of God". They are accompanied by two allegorical figures alluding to attributes of Our Lady. The assemblage is by Leonardo Retti. Above these figures is a large tablet proclaiming "the shopkeepers did this and they paid for it"