The Great Wall Of China It Is Bigger Defense Structure In The World Stock Photo

The Great Wall was built over centuries, beginning as early as the 7th century BC and undergoing significant expansions and renovations during different dynasties. It was constructed using a variety of materials such as bricks, stone, wood, and compacted earth. The wall spans approximately 13,000 miles (21,196 kilometers) in total, running through diverse terrains including mountains, deserts, and grasslands. ai generated