The wooden 16th century ceiling was restored in 1934-35. The widely  faded frieze was completed during a modern restoration.
They both show a grotesque decoration with the emblem and the coat of arms of cardinal Alessandro Sforza, legate of  Bologna from 1569 to 1570.
The paintings have been compared with the stylistically similar decoration of the main room in the castle of Torrechiara near Parma, painted by Cesare Baglione for the Sforza family.