Old Town of Les Useres Monument · Les Useres, L'Alcalatén, Castellón Image of Les Useres, not of the place itself. The Vila Vella de Les Useres, in the old town of the Castellón municipality, is a site declared a Bien de Interés Cultural (Spain's highest level of heritage protection), where utensils and pottery have been found confirming an Iberian origin for the settlement. On this same site a castle once stood, on whose remains the church of the Transfiguration was later built, which today marks the site of the former fortified settlement. Photo: Pacopac (CC BY-SA 4.0) What to see and do in Les Useres