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Triumphal arches, Basilica of Saint Vitale (6th century) 
The mosaics that adorn the triumphal arches of the Basilica of Saint Vitale in Ravenna, Italy, the former capital of the Holy Roman Empire, are among the most impressive examples of Byzantine art. Here, 15 medallions depict the figures of Jesus Christ, the Apostles, Sts. Gervasius and Protasius, and the sons of St. Vitale, to whom the church is dedicated. This mosaic stands out for the breadth of colors, from bright green to gold and dark blue, all realized thanks to small pieces of stone, glass or ceramic.

© Petar Milošević|Wikipedia|CC BY-SA 4.0