The Great Wall of China is one of the worlds best-known landmarks. Winding east to west through parts of China, the wall cuts a trail through deserts, around mountains, and to the sea.
Full-color photographs, maps, timeline, and sidebars describe the Great Wall of China, begun in 221 B.C. by China's first emperor, Qin Shi Huangdi, as a means of defense against the Mongols.
