The Great Wall of China is one of the longest man-made structures in the world, stretching over 21,000 kilometers (13,000 miles). It was built over many centuries to protect Chinese kingdoms from invasions and raids by nomadic tribes. The wall is made from various materials, including stone, brick, and earth.
Besides its military purpose, the Great Wall is also a symbol of China’s strength and perseverance. Today, it attracts millions of tourists from around the world who come to admire its size, history, and architectural beauty. Shutdown123