The Great Wall is one of the greatest wonders of the world. The Great Wall of China winds up and down across deserts, grasslands, mountains and plateaus, stretching approximately 8,851.8 kilometers (5,500 miles) from east to west of China. The Great Wall has a history of more than 2000 years, some of the sections are now in ruins or have disappeared.
However, it is still one of the most appealing attractions all around the world owing to its architectural grandeur and historical significance.
A first set of walls, designed to keep Mongol nomads out of China, were built of earth and stones in wood frames during the Qin Dynasty. Some additions and modifications were made to these simple walls over the next millennium but the major construction of the “modern” walls began in the Ming Dynasty.
Since the Great Wall was discontinuous, Mongol invaders had no trouble breaching the wall by going around it, so the wall proved unsuccessful and was eventually abandoned.