描述
With multiple walls dating back to the 7th century BC, the Great Wall of China is an unfathomable construction work and the longest structure ever built, reaching 21,196 kilometers long. Once built as a defensive piece meant to protect China's north, it has until today stood the test of time and still welcomes visitors; most of the time left in awe in front of the deep history and the beautiful scenery that the Great Wall provides.
