The Castle dominates the town from the top of the hill on which it stands. Its origins are very ancient as already in Roman times in the place where it stands there was a small fortress.
After having been the subject of various defensive constructions, in the XIII century the castle underwent new architectural interventions which gave it its current appearance.
Its history is closely linked to the Dal Pozzo family who bought it in 1566 and remained in possession of it for centuries, until the death in 1876 of Princess Maria Vittoria, Lady of Reano and Queen of Spain, a figure very dear to the people of Reano for the his sensitivity and generosity. Currently the Castle is privately owned.
After lengthy legal proceedings, which led to the auctioning of the rich and precious furnishings of the over seven hundred rooms, the building was purchased by a wealthy Egyptian oilman married to a young woman from Reano. The new owner, who lives there permanently, has had extensive restoration work carried out. Today he is trying to restore the castle to its former glory. The memory of the Princes of the Cisterna lives today in the Chapel of the Madonna della Pietà, which in addition to the family tomb, where Prince Carlo Emanuele, his wife Louise de Merode and his second daughter Beatrice rest, houses three valuable paintings belonging to the famous pictorial cycle of Pietrafitta . These were executed by some of the best Tuscan painters present in Florence at the end of the sixteenth century. The chapel was now home to a museum inaugurated in 2014 on the initiative of Councilor Giuseppe Morra.