It is the only Spanish cathedral that has this distinction independently, without being joined to the historic center of a city (as in Salamanca, Santiago de Compostela, Ávila, Córdoba, Toledo, Alcalá de Henares or Cuenca) or in union with other buildings, as in Seville.
Katedrala je bila razglašena za svetovno dediščino UNESCO-ja 31. oktobra 1984.