Church of la Mare de Déu de la Purificació Monument · Bossòst, Val d'Aran, Lleida A Romanesque church in Bossòst, one of the most notable in the Val d'Aran, dedicated to the Mare de Déu de la Purificació and dating from the 12th century; in Aranese it is also known as Mair de Diu dera Purificacion, and it is likewise called the church of the Assumption of Mary. Photo: Florent Pécassou (CC BY-SA 3.0) What to see and do in Bossòst