The Great Wall of China in fact is a complete and rigorous defense project composed of countless passes, watchtowers, garrison towns, beacon towers and blockhouses.
Sure you've seen photos...but the only way to really appreciate the Great Wall of China is to stand on its walls and stare in awe as it snakes across the Gobi Desert and China's placid mountains like a majestic ridge-backed dragon.
Great for invaders point of veiw
This website helped me alot to understand the Great Wall of China. Some of the facts include its length, history, when its was built, why it was built and its height.
GREAT WALL OF CHINA NEAR BEIJING The Great Wall of China is the world's longest wall. Estimates of its length vary from 1,500 miles to 31,250 miles, with most sources saying it is between 3,900 miles and 4,500 miles long.