Arista tiles served to fill early Renaissance 16th-century Andalusian architecture with colour during the reigns of the Catholic Monarchs and the Emperor Charles V. They first appeared in Spain around 1475 and swept Seville in the early 16th century. It permitted extensive tile use at home and export abroad and this has much to do with Seville´s enduring fame as a Spanish ceramic centre. Walls were protected and decorated with them to form panels resembling vertical or horizontal carpets. Each individual motif had an independent aesthetic value, which was enhanced when multiplied, forming extensive patterns of a size necessary to cover walls or ceilings. The Reales Alcázares and Casa de Pilatos in Seville are famous for their spectacular walls and stairways lined with large panels of Sevillian tiles.