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People stand by the Roman aqueduct in Segovia, Spain, Aug. 6, 2018. Segovia is famous for its Roman aqueduct, as well as ancient churches and castles. The city center of Segovia was declared World Heritage by the UNESCO in 1985. (Xinhua/Guo Qiuda)1 2 3 4 5 6 7 Next 1 2 3 4 5 6 7 Next