Reales Fábricas de Artillería Monument · Jimena de la Frontera, Campo de Gibraltar, Cádiz Ruins of 18th-century blast furnaces on the banks of the Guadiaro and Hozgarganta rivers, considered the second Andalusian blast furnaces after that of Cartajima. siglo XVIII Photo: Antonio from Mijas, España (CC BY-SA 2.0) What to see and do in Jimena de la Frontera