The Tower of Alsamora Monument · Sant Esteve de la Sarga, Pallars Jussà, Lleida A circular tower atop the village of Alsamora, within Sant Esteve de la Sarga, the only visible remnant of the castle of Alsamora; clearly medieval in origin, probably from the 11th century, it is not documented until the 18th century, although the territory is already mentioned in 1038. It formed part of a defensive line north of the Montsec together with other towers such as those of Viacamp, Girbeta or Castellnou de Montsec. About thirty metres high, ten metres in outer diameter and 3.25 m in wall thickness, it is the second-tallest tower in Catalonia and one of the best preserved; the interior is divided into four floors, the first covered by a false stone dome 3.2 metres across, and the upper floors, reached through a door facing north, retain double-splayed arrow slits. Photo: Jordi D. A. from Barcelona, Catalan Lands (CC BY-SA 2.0) What to see and do in Sant Esteve de la Sarga