Photo taken on April 17, 2014 shows Khai Dinh Tomb, the tomb of Nguyen Dynasty's second last emperor Nguyen Phuc Tuan, in central Vietnam's Hue. So far, five cultural sites, namely Central Sector of the Imperial Citadel of Thang Long - Hanoi, Citadel of the Ho Dynasty, Complex of Hue Monuments, Hoi An Ancient Town, My Son Sanctuary, and one mixed site of Trang An Landscape Complex in Vietnam have been inscribed in the list of world heritages by UNESCO. (Photo: Xinhua/Zhang Jianhua)
