Festivities of invierno de Fonz (San Antón) Activity · Fonz, Cinca Medio, Huesca Image of Fonz, not of the place itself. Fonz's winter patron saint is actually San Blas, on 3 February, with a bonfire and a climb up the greasy pole; the bonfire of San Antón, on 17 January, is a custom shared with other villages of the Cinca Medio. Photo: Willtron (CC BY-SA 4.0) What to see and do in Fonz