This building is the best representation of the thought of the Spanish Renaissance princes. The Duke Íñigo de Mendoza ordered to erect it as a sign of his power and position. Everything in the building breathes splendor, from its facade to the interior decorations. Christians and Muslims collaborated in its construction, directed by the architect Juan Guas, which is why there are Renaissance, Gothic elements from northern Europe and Islamic decorations. Its magnificence is such that the kings Felipe II -Austria- and Felipe V -Borbón- chose it to celebrate their weddings there.