Changcheng, commonly known as the Great Wall of China, is a historic series of fortifications located across northern China. It was constructed over several centuries to protect the Chinese states and empires against various nomadic groups from the Eurasian Steppe.
The structure is characterized by its vast length and diverse architectural styles, which vary depending on the dynasty in which they were built. It remains one of the most recognizable landmarks in the world and serves as a significant symbol of Chinese history and engineering.