Faraneto is a small hamlet of Coli whose name references the local oak trees. It is the site of a medieval castle that belonged to the Grassi family. During the sixteenth century, it was turned into a residence. In the following century an unknown painter completed frescoes there.

At the end of the seventeenth century the Grassi family moved to Piacenza and the castle went into a long decay. Sold at the end of the nineteenth century the building was used for agricultural purposes.

It is difficult today to imagine the beauty of the original castle. There are still two beautiful gates. The first has a rounded arch with a keystone and two small Iconic columns. The second, which is a ruin, is stylistically similar but larger. It could have been the main entrance.

The building is private and not open for visits.