Tembok Besar China

     The first great wall was built during the First Emperor Qin Dynasty. Great Wall was built by combining several existing walls built in the Warring States Period. The original Great Wall is located north of the Great Wall that still exists today, and reached the eastern end of North Korea today. But most of the first great wall have been destroyed.

The Government has instructed the farmers to build this wall, and many died while building it. Therefore, it is also called "the longest cemetery on Earth".
The view from the tower observer 
Great Wall we see today is the result of the development of the Ming Dynasty. The interior of the wall containing soil mixed with rocks. Uppers made ​​the main road for the cavalry of China. It is much stronger and longer lasting. The main function of this barrier is to prevent attacks of nomadic tribes from the north.Great Wall of the Ming Dinasty began in the east of Shanhai Fortress, near Qinhuangdao in Hebei Region. It is through the nine provinces, 100 districts and the last 500 km to the west is completely destroyed. At the western end of the day is located in historic Jiayuguan (Jiayu fortress) in northwestern Gansu Province, at the end of the Silk Road