TOPSHOT - This photograph taken on September 28, 2018, shows a fisherman at work beside waterside mansions on the Bosphorus River coast on the Asian side of Istanbul. - They are among the most iconic sights of Istanbul -- magnificent waterside mansions strung out along the Bosphorus as the waters of the strait dividing Europe and Asia lap almost at their front doors. Once the preserve of the Ottoman elite and affluent foreigners working in what was Constantinople, these mansions, known as yalis, were made famous in novels and more recently modern Turkey's hugely successful soap operas. (Photo by OZAN KOSE / AFP)