Castle of Sanaüja Monument · Sanaüja, Segarra, Lleida 10th-century castle conquered from the Muslims in 951, documented in a papal bull of Pope Sylvester II from the year 1001 and confirmed by Benedict VIII in 1012; it preserves the early medieval cylindrical tower, walls, an 11th-century Romanesque chapel, and a five-bay Baroque bell tower, after serving as an episcopal residence in the 16th-17th centuries. Photo: Jmarchn (CC BY-SA 3.0) What to see and do in Sanaüja