Guillermo I.
Google
One of the most impressive cathedrals in Spain, also constantly underrated and overshadowed by El Pilar for obvious reasons, it retains a big artistic value in unique from the wood altarpiece to the choir or all the baroque interiors, plus the mudejar tiles on the façade or the collection of rich medieval tapestries. It reflects the role of Zaragoza as witness in a crossroads of civilizations from Roman to Visigoth, muslim, and Christian again in Romanesque, Gothic, renaissance, unique mudejar with arab reminiscences, baroque, neoclassic, etc all in one single building