Festivities of invierno de Monzón (San Antón) Activity · Monzón, Cinca Medio, Huesca Image of Monzón, not of the place itself. Although the civic patron saint of Monzón is Santa Bárbara, with a festival on 4 December since the reconquest of the stronghold in 1643, the city also lights the bonfire of San Antón on 17 January, a custom common to the villages of the Cinca Medio. Photo: agracier - NO VIEWS (CC BY-SA 3.0) What to see and do in Monzón