[1][2] Next to the palace, Carlo Ambrogio Mezzabarba, papal legate in China, patriarch of Alexandria in 1719 and bishop of Lodi from 1725, then had a private oratory built in 1734, dedicated to Saints Quirico and Giulitta.

But the greatest contrast can be seen between the severity of the pilasters and the abundance of architectural-decorative elements of the windows and even more so of the balconies, where the curve and the corner take on a plastic rather than architectural aspect and the stone of which they are facts seem to assume a carnal nature.

[7] The ballroom (now the town council hall) was entirely frescoed by Giovanni Angelo Borroni, who painted the triumph of the arts and sciences over vices and ignorance on the ceiling, and adorned the walls with the stories of Diana treated with lively imagination.

[9] In 1733, Carlo Ambrogio Mezzabarba, titular patriarch of Alexandria and bishop of Lodi, commissioned the architect Giovanni Antonio Veneroni to design an oratory in the eastern corner of the building,[10] immediately dedicated to Saints Quirico and Giulitta.

[11] The oratory is attached to the ground floor of the nearby building, from which, albeit in more severe forms, it incorporates many of the decorative elements of the main facade.