Festivities of les Useres Activity · Les Useres, L'Alcalatén, Castellón Image of Les Useres, not of the place itself. Les Useres celebrates its patronal festival during the first week of August, as well as San Antonio Abad on 17 January and the centuries-old pilgrimage of the Peregrinos de Useres to the sanctuary of Sant Joan de Penyagolosa, on the last Friday of April. Photo: Marcela Escandell (CC BY-SA 2.0) What to see and do in Les Useres