Valdejalón is a comarca in Aragon, Spain. It is located in Zaragoza Province, in the transitional area between the Iberian System and the Ebro Valley.The capital of Valdejalón is La Almunia de Doña Godina, located at the western end of Sierra de Algairén. This comarca is one of the main sites of the Mudéjar Architecture of Aragon.MunicipalitiesAlmonacid de la Sierra La Almunia de Doña Godina Alpartir Bardallur Calatorao Chodes Épila Lucena de Jalón Lumpiaque Morata de Jalón La Muela Plasencia de Jalón Ricla Rueda de Jalón Salillas de Jalón Santa Cruz de Grío Urrea de Jalón