Gonbad-e Qabus historical tower seen in Gonbad-e Kavus city, Iran

Photo taken on Nov. 22, 2018 shows Gonbad-e Qabus historical tower in Gonbad-e Kavus city, Iran. The baked-brick-built tower is one of UNESCO's World Heritage Sites which attracts tourists to visit every year. (Xinhua/Ahmad Halabisaz)