The Great Wall of China is one of the most iconic and recognizable landmarks in the world. Spanning over 13,000 miles, it is the longest wall in the world and a testament to the ingenuity and determination of the Chinese people. The wall is not a single structure but rather a series of walls and fortifications that were built over a period of centuries. The construction of the Great Wall of China began in 220 BCE and continued until 206 BCE.