Castle of Paüls Monument · Paüls, Baix Ebre, Tarragona Castle of Islamic origin, administrative centre of its district before the Christian conquest, which Ramon Berenguer IV granted to Roger Despuig; today only insignificant remains survive, and in early 2026 the collapse of a wall brought to light Iberian and early Iron Age pottery previously unknown on the hill. Photo: Profrob (CC BY-SA 4.0) What to see and do in Paüls