 It is a large Gothic building, popularly dubbed as "The unknown beauty" because it is not as well known as other Spanish cathedrals, though it is a valuable building which has in its interior many works of art of great value.Its more than 130 metres long, 42 metres high and 50 metres wide at the centre, making it one of the largest cathedrals in Spain and Europe.Just by way of comparison, the internal length of the Cathedral of Reims reaches 138m; in turn, the height of the central nave reaches 33m in Notre Dame de Paris; in Reims it is 38m, 42m in Notre-Dame d'Amiens and 48m in Beauvais Cathedral, the highest of all Gothic cathedrals.