Falles de Taüll Activity · la Vall de Boí, Alta Ribagorça, Lleida The Falles de Taüll are celebrated on the third weekend of July and close the summer cycle of fire festivals in the Vall de Boí. On Friday the descent of the falles takes place; on Saturday, activities and a night of festivities; and on Sunday, the dance of Sant Isidre i la Pila and the Ball Pla, traditional dances of the village, which also preserves two of the Romanesque churches of the Vall de Boí declared World Heritage by UNESCO in 2000. juliol Photo: Gustau Erill i Pinyot (CC BY-SA 3.0) What to see and do in la Vall de Boí