Great Wall

Great Wall	Great Wall

The longest man-made architecture in the world is the Great Wall in China ,which is one of the greatest wonders of the world. It climbs and descends on the ridges of mountains in northern China and has a total length of more than 6,700 kilometers. It was first started during the Spring and Autumn and the Warring States periods.
In ancient times, Great wall of China was a gigantic defensive project.What’s more, it is one of the largest construction projects ever completed. All together,there were 3 constration peek in history,that is in Qin dynasty,Han dynasty and Ming dynasty.Nowadays the Great wall wa are seeing is mainly the Ming Grear Wall. the The Ming Dynasty overthrew the Yuan, obtaining ruling power throughout the nation.The original rulers, however, only retreated to their former positions. They were not destroyed. This made it possible for them to make a come-back.       
Today, the Great Wall became a major security issue for the Ming Dynasty. Great wall has lost its strategic importance and has become a world-renowned tourist attraction. The laboring people of different dynasties demonstrated their intelligence and wisdom while building this great project. They left behind a precious heritage deserving our everlasting care. Badaling section, Juyong pass and Cloud Terrace were listed as important historical monuments under special preservation by the Chinese government in 1961. The Great Wall was listed by UNESCO in 1987 as one of the world heritages.