Tower of Perauba Monument · Conca de Dalt, Pallars Jussà, Lleida Image of Conca de Dalt, not of the place itself. Romanesque circular tower from around the year 1000, of regular and fairly primitive ashlars, with an interior diameter of 1.70 m and walls 1.2 m thick; it today preserves about 7 m of height, less than the original. It served as a medieval watchtower on the Serra de Palles; the tradition recorded by the writer Pep Coll places a king here, as recalled by the nearby spring of the Font de la Casa del Rei. A Bien Cultural de Interés Nacional (Catalonia's top heritage-protection category). Photo: Gustau Erill i Pinyot (CC BY-SA 3.0) What to see and do in Conca de Dalt