The Great Wall spans more than two thousand years and traverses 5,000 kilometers. is one of the great wonders of the world.
Starting out in the east on the banks of the Yalu River in Liaoning Province, the Wall stretches westwards for 12,700 kilometers to Jiayuguan in the Gobi desert, thus known as the Ten Thousand Li Wall in China.
In 1987, the Wall was listed by UNESCO as a world cultural heritage site.