One of the most astonishing things that humans have ever created is certainly the Great Wall of China. The Great Wall of China is very impressive, yet many people don’t know so many things about it. Furthermore, the defensive characteristics of the Great Wall were enhanced by the construction of watchtowers, troop barracks, garrison stations, signaling capabilities through the means of smoke or fire, and the fact that the path of the Great Wall also served as a transportation corridor. Today, the defensive system of the Great Wall is generally recognized as one of the most impressive architectural feats in history. A formal definition of what constitutes a “Great Wall” has not been agreed upon, making the full course of the Great Wall difficult to describe in its entirety.