On the top of the hill of Monte Barro, about a hundred meters from the agglomeration of the municipality of Torricella Taverne, there are the remains of a building dating from the late Middle Ages (XIII - XIV centuries) closely related to the Castle of Santa Sofia in Bironico. The latter is part of the Rusca family's buildings and castles of well-known political and historical importance in Ticino and northern Italy. It is mentioned in a document in 1354 and may mark (according to the Historical Dictionary of Switzerland) the boundary of the possessions of the royal court of Agnuzzo. It is possible that the structure was built on a pre-existing Lombard position, perhaps even in late antiquity.