Festivities of Gistaín Activity · Gistaín, Sobrarbe, Huesca Image of Gistaín, not of the place itself. The patron saint festival of Gistaín, in the Chistau valley (Huesca), is held on 20 August in honour of San Joaquín, with processions and traditional costumes, and continues the following day with the pilgrimage of San Fabián to a nearby hermitage, where chistavine dances are danced and the Gozos de San Fabián are sung. The village's festive calendar also includes, in January, the trucos de San Antón, a nocturnal bell-ringing round in which residents go through all the villages of the valley carrying large cowbells, and a carnival that retains features of its own from the Aragonese Pyrenean carnival, with the figure of the muyén paraded on a donkey while the young people ask for food from house to house. Photo: trefeater (CC BY-SA 2.0) What to see and do in Gistaín