Here I'm glad to tell you something about the Graet Wall in our country.
The Graet Wall was built over 2000 years ago. The Chinese ancient emperors asked their subjects to build the huge wall. Why did they do this? One of the main reasons is that the Graet Wall could protect their country and people from the enemise.
The Graet Wall is about 8850 kilometers long and about 5-10 meters wide. As far as I know, it's longer than any other wall around the world. Also, it's one of the biggest man-made buildings in the world. In fact, it's one of the most popular places to visit, too. For this reason, the number of the tourists of it is larger than most places in the world.
We Chinese people are proud of it.