Explore details about location Avenida Pío XII. Avenida Pío XII is a location situated within the San Juan alongside other areas such as Calle del Monasterio de Urdax - Urdazubiko Monasterioa Kalea, Plaza del Monasterio de la Oliva, Calle del Monasterio de la Oliva - Oliva Monasterioa Kalea.