Welcome to the Great Wall. The Great Wall of China is one of the wonders of the world. It is one of the few man-made objects on earth that can be seen on the moon. It dates from about 770 BC. It is more than 6000 kilometres long, 6-7 metres high and 4-5 metres wide. All the work was done by hand. Many people were forced to work on the wall. Now the Great Wall has become a place of interest. We all know the famous Chinese saying: “He who does not reach the Great Wall is not a true man.” Now let me show you around the Great Wall. This way, Please.