The Great Wall of China has a history of over two thousand years. It runs from the east the west in North China. It is about 6, 300 kilometers . It is often . "Ten-Thousand-Li Great Wall". It is one of the "Seven Wonders of the Ancient World".
The Great Wall is enough for ten men to walk side by side. Horses can also run along it, too. The Great Wall was made stones and bricks (砖). There are huge stones on each side and on highest part. But now some sections of it are worn out.
There are tall watchtowers along the Great Wall. Once upon time, the soldiers kept watching the enemies (敌人) in the watchtowers day and night. They made on the towers to tell each other when the enemies came.
Nowadays we use the Great Wall to keep away the enemies any more. It is a famous place of interest to all the people in the world. Every year thousands of people come to visit from all over the world.