Perhaps the most recognisable symbol of China and its long and vivid history, the Great Wall of China actually consists of numerous walls and fortifications, many running parallel to each other. Originally conceived by Emperor Qin Shi Huang (c. 259-210 B.C.) in the third century B.C. as a means of preventing incursions from barbarian nomads into the Chinese Empire, the wall is one of the most extensive construction projects ever completed.