The Great Wall of China, a memorable landmark, is the most popular tourist attraction in China. The Wall has fascinated the minds of many in the world and it is part of the Seven Wonders of the World.
The existing Wall today was constructed by the Ming Dynasty over 600 years ago. The reason the wall still stand today is because there was an invention during that time, mixing rice flour to create extremely tough bricks and mortar. Today, few parts of the Great Wall are in great condition because it was restored to attract tourists.
China's Great Wall - Documentary Intro
Secrets of Great Wall 1, 2
to be continued......