the world. [ 51 ] Administrative divisions Galicia Navarre Madrid La Rioja Aragon Catalonia Valencia Castilla La Mancha Extremadura Portugal Castilla y León Asturias Cantabria Basque Country Murcia Andalusia Ceuta Melilla France Balearic Islands Canary Islands Mediterranean Sea Bay of Biscay Atlantic Ocean Andorra Atlantic Ocean     Main articles:  Autonomous communities