Festivities of Bailo Activity · Bailo, La Jacetania, Huesca Image of Bailo, not of the place itself. Bailo's festival is held in a village documented since the year 948, historic head of the Bailés since the 10th century, which since 2012 has re-enacted the Holy Grail's stay in the village. Photo: Wikipedia / Wikimedia Commons (CC BY-SA) What to see and do in Bailo