A symbol of ancient Chinese civilization， the Great Wall of China is one of the world’s oldest and most magnificent man-made scenes， which can even be seen from the space. Given its outstanding architectural achievement and remarkable historical influence， the Great Wall was listed as a UNESCO World Natural and Cultural Heritage site in 1987， the first of its kind in China.
The Great Wall was originally built over 2500 years ago during the West Zhou Dynasty， and served as a functional military defense to prevent the invasion of the northern nomadic minorities. It had been playing a crucial role in wars in ancient Chinese history， therefore， the walls were continually to be extended in the next 2000+ years， till the end of Ming Dynasty.
As a result， the Great Wall was expanded to 15 provinces and municipalities in China， and formed in a beautiful shape of "Long" (Chinese style dragon)
