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A visitor sits on the ruins of the ancient city of Hierapolis in Denizli, Turkey on Aug. 6, 2020. The ruins of Hierapolis is listed as a UNESCO World Heritage Site. (Photo by Mustafa Kaya/Xinhua)
A visitor sits on the ruins of the ancient city of Hierapolis in Denizli, Turkey on Aug. 6, 2020. The ruins of Hierapolis is listed as a UNESCO World Heritage Site. (Photo by Mustafa Kaya/Xinhua)