Great Wall of China

Great Wall of China or the Great Wall of China, also known in China as the Great Wall Along the 10,000 Li ¹ (万里长城;万里长城; Wanli Chángchéng) is the longest building ever made by humans, is located in the People's Republic of China. The length is 6400 kilometers (from Sanhai Pass area on the east to Lop Nur in the west) and 8 meters high in order to prevent the Mongol invasion from the north at that time. The width of the top 5 m, while the bottom width of 8 m. 180-270 m every kind of watchtower built. High watchtower was 11-12 m.

To make this giant wall, it could take hundreds of years at the time of the emperor. Initially, it is estimated Qin Shi-huang who started building the wall, but according to the research literature, history and records, the wall has been built up before the Qin Dynasty, built exactly the first time in the Age of Warring States. Emperor Qin Shi-huang continue development and strengthening the walls that had been built earlier.

After the death of Qin Shi-huang, making this wall had stopped and only resumed in the Sui Dynasty, the last resumed again at the time of the Ming Dynasty. Great Wall forms we now see is the result of development of the Sun earlier era. The inside walls of soil mixed with bricks and rocks. The top is made the main road for China cavalry.

Great Wall of China is considered as one of the Seven Wonders of the World. In 1987, this building was included in the list of UNESCO World Heritage Site.