Castle of Voltrera Monument · Abrera, Baix Llobregat, Barcelona The castle of Voltrera, in the municipal area of Abrera, is a work declared bien cultural de interés nacional (Catalonia's highest level of heritage protection), made up of still-notable wall remains, next to the Romanesque chapel of Sant Pere, very close by and also in ruins. This chapel, with a nave and a semicircular apse with two apsidioles in the lateral walls and Lombard decoration on the north façade, is the oldest part of the complex, dated to around the 11th century; the rest was heavily altered in modern times, under the lordship of the Despalau and Amat families. The territory of Voltrera is mentioned from 996, but the castle is not documented until 1027, with Ramon Guillem de Voltrera as lord, a vassal of his brother, the lord of Castellví. It belonged to the barony of Castellví de Rosanes and since the 16th century has also been called the castle of Vilalba. Photo: Deosringas (CC BY-SA 3.0 es) What to see and do in Abrera