The Valens Aqueduct in Istanbul,Turkey
{"Image ImageDescription": "The Valens Aqueduct is a Roman aqueduct which was the major water-providing system of the Eastern Roman capital of Constantinople . Completed by Roman Emperor Valens in the late 4th century AD, it was maintained and used by the Byzantines and later the Ottomans, and remains one of the most important landmarks of the city.", "Image Copyright": "Ayhan Altun"}