The famous wall built during the Ming Dynasty to protect against invasions is the Great Wall of China. Construction and enhancement of the wall continued from the 14th to the 17th centuries, as a means to defend against Mongolian incursions and maintain control over border trade. Stretching over 13,000 miles, the Great Wall showcases impressive engineering and architectural skills. It stands as a symbol of China's historical resilience and has become a UNESCO World Heritage Site, attracting millions of visitors annually.