Castle of Biosca Monument · Biosca, Solsonès, Lleida 11th-century Romanesque castle, documented in 1067 in the hands of Sança d'Aragó, mother of the count of Urgell; expanded by the Liberals during the First Carlist War in 1839, today it is a complex of ruins with a chapel, the hermitage of Santa Maria. Photo: Deosringas (CC BY-SA 3.0 es) What to see and do in Biosca