In a suburban area, along the left bank of the canal, is the church of S. Cristoforo. This building is formed by two adjoining constructions which are still identifiable. The one on the left, dates possibly from the end of the 7th century and the ducal chapel was added to it in 1398 at the request of the duke on the time of a long famine. This is one of the most typical examples of Gothic Lombard style both inside and outside. The paintings from the fifteenth and early sixteenth century are particularly interesting.