4. The Great Wall
Photo taken on May 13, 2018 shows sea of clouds after rainfall at Huangyaguan section of the Great Wall in Tianjin, north China. (Xinhua/Yang Yushan)
Just like a gigantic dragon, the Great Wall winds up and down across deserts, grasslands, mountains and plateaus, stretching from east to west of China.
It begins in the east at Shanhaiguan in Hebei province and ends at Jiayuguan in Gansu province to the west. Its main body consists of walls, horse tracks, watch towers, and shelters on the wall, and includes fortresses and passes along the Wall.
With a history of more than 2,000 years, some of the sections are now in ruins or have disappeared. However, it is still one of the most appealing attractions all around the world owing to its architectural grandeur and historical significance.
The Great Wall, one of the greatest wonders of the world, was listed as a World Heritage by UNESCO in 1987.