![1203ph050](https://chiculture.org.hk/sites/mainsite/files/styles/free_style_image_styles/public/2019-08/1203ph050.jpg?itok=SfwzfBep)
The Great Wall
The Great Wall, more than two thousand years old, was constructed to protect China against the incursions of northern nomadic tribes. The entire wall was not built at one time; rather, sections were built and joined at various times throughout history.