Castillo de la Armada Monument · Las Navas de la Concepción, Sierra Norte, Seville Image of Las Navas de la Concepción, not of the place itself. Declared a Bien de Interés Cultural on 25 June 1985, it is the municipality's main monument, located deep within the Sierra Norte natural park. 25 de junio de 1985 Photo: Fran Antunez (CC BY-SA 3.0) What to see and do in Las Navas de la Concepción