The Great Wall is located in China. This historic structure spans several provinces and is known for its impressive length and architectural significance. Originating as early as the 7th century BC, it was initially built to protect against invasions. Over the centuries, various dynasties expanded and enhanced the wall, particularly during the Ming Dynasty, when most of the existing sections were constructed. The Great Wall symbolizes China's historical strength and perseverance and is a UNESCO World Heritage Site, attracting millions of visitors each year.