Explore details about location Calle Biurdana. Calle Biurdana is a location situated within the San Juan alongside other areas such as Avenida Pío XII, Calle de la Vuelta del Castillo, Calle Virgen de Codés. Additionally, some smaller parts of Calle Biurdana include specific areas like Calle del Doctor Gortari adding to the diversity of its landscape.