Inside the Great Wall Top AttractionstThe Great Wall of China is one of the great wonders of the world. It runs for 6,700 kilometers across deserts, grasslands, and mountains. The construction of the wall began in the 3rd century A.D. and was rebuilt in the 15th and 16th centuries. It was originally built in separate pieces to protecr China from invaders. In 214 B.C., Emperor Qin Shi Huang unified the country, and he joined the walls together into one huge wall. It took ten years to finish. The Great Wall is a monument to the building skills and to the wisdom and patience of the Chinese people. The Museum of Qin Terra Cotta Warriors at Xi'an is a sight not to be missed by any visitor to China. Life-size clay figures of 7,000 soldiers, horses, and chariots stand in battle formmation. These famous figures were discovered by chance in 1974. A group of workers found ancient pottery when they were digging a well.