Ermita de Nuestra Señora de la Argamasa, Riolobos Monument · Riolobos, Valle del Alagón, Cáceres Image of Riolobos, not of the place itself. Hermitage at the center of Riolobos's festivals and romerías; local tradition holds that it was built on this spot because an image of the Virgin was found in the nearby Alagón river. The municipality also preserves a bridge and Roman road. Photo: Xemenendura (CC BY-SA 4.0) What to see and do in Riolobos