Tower of en Virós Monument · Rialp, Pallars Sobirà, Lleida The torre d'en Virós is the only surviving tower of the walled perimeter of the vila closa of Rialp, near the confluence of the valleys of the Noguera Pallaresa and the Sant Antoni river, at the foot of the castle hill. The origin of the town is medieval and linked to that of the castle, documented since the 11th century; in the late Middle Ages it was the centre of one of the five districts of the viscounty of Castellbò. The houses were arranged on both sides of the main road, with the ends closed off by gateways -of which only the Gothic portalet de la Mola survives- and semicircular towers on the rear wall. The torre d'en Virós, semicircular, retains a ground floor and four storeys and has been converted into a dwelling, with doors, balconies and windows opened later. Photo: EliziR (CC BY-SA 3.0) What to see and do in Rialp