The Great Wall of China primarily borders China itself, stretching across various provinces in the northern part of the country. However, in terms of proximity to neighboring countries, the wall is near several borders, including Mongolia to the north. The Great Wall was originally built not only as a defense mechanism against invasions but also to control trade and immigration along the Silk Road.
While it does not directly border any other specific country, its closest neighboring country is Mongolia, as some sections of the wall were constructed near the historical interaction zone between the two regions. The wall therefore stands as a significant historical monument within China’s territorial landscape, while being part of the larger narrative that shapes its relationships with adjacent nations.