The Wall we see today is but one tenth of the total length of the walls ever constructed over succeeding dynasties of China The bests erved sections refer to the wall built during the Ming Dynasty （1368-1644）, from Shan hai guan in the east to Jia yuguan In the West.Approximately 5,130 km （3,188 miles） in length, the Ming Wall was built under the most difficult conditions, across some of the most dangerous terrains, but with the most popular tourist attractions as well. Traditionally known to the Chineseas the"Long Wall of TenThousand", the massive structure takes advantage of the natural terrain for defensive purposes following the highest points and clinging to ridges. Like a majes dragon, these fortifications offer truly breathtaking views, enhanced by its mountain passes castle gates,and thousands of watch towers and signal beacons along the wall.
Justification of the World Heritage Committee：
In 220 B.C., under the reign of Qin Shi Huang, sections of earlier fortifications werejoined together to form a united defense system against invasions from the north.Construction continued up to the Ming dynasty （1368-1644）, when the Great Wall be came the world s largest military structure. Its historic and strategic importance is matched by its architectural significance.
