The Great Wall of China, one of the wonders of the world, spans about 5,500 miles long from the West Korean border into the Gobi Desert. The wall was used for a defense to protect themselves from the Mongols and other invaders. The workers came from three types of groups: soldiers, peasants, and criminals. The Great Wall has been modernized and impacted by people by construction of towns, houses, and adding utility poles. I found the lookout towers interesting, because when the Chinese experienced an enemy attack, the watchers would often use a signal fire to alert others. In summary, The Great Wall of China was a magnificent site that has been impacted by humans today.
