Monticello Castle was first mentioned in 1372, when it was occupied by troops loyal to the Pope during an anti-Visconti uprising. Located on the ridge that divides Val Trebbia and Val Luretta, Monticello Castle represents a pleasant and harmonious whole from a landscape point of view with the surrounding hilly environment typical of the lower Piacenza Apennines (540 meters above sea level). The structure has an irregular quadrangular plan, but currently shows the clearly visible signs of the various and heterogeneous architectural modifications and additions undergone over the centuries. The front of the castle is on the eastern side, which is dominated by the mass of the portal, equipped in ancient times with a drawbridge; a sturdy square tower rises to the left of the entrance to guard the south side, while two round turrets are placed to protect the north side. The interior develops around two courtyards of different proportions, facing the main buildings, used as homes. All around the fortress, structures of an evidently agricultural nature have arisen in more recent times, which have little to do with the original structure and which emphasize its hybrid aspect, but at the same time soften its forms.
The castle is currently used as the headquarters of a local agricultural company, but it is worth noting the stark contrast between the unused parts of the building, almost at risk of collapse in some places, and the inhabited parts, which are better preserved.