In 1497 , the chapel was refurbished .
Soon thereafter the main altarpiece became a canvas depicting the Madonna della Misericordia Surrounded by Saints Julian , Andrew , Roch and Sebastian , which was painted on the wall surrounding the bishop 's orchard .
In 1497 , the chapel was refurbished , and soon thereafter the main altarpiece became a canvas depicting the Madonna della Misericordia Surrounded by Saints Julian , Andrew , Roch and Sebastian , which was painted on the wall surrounding the bishop 's orchard .