The Great Wall of China is considered to be the only man-made project visible from the moon. Although it was once thought to have been built entirely during the Qin Dynasty between 221 and 208 BC it is now believed to have been started earlier. .

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The 15-foot-high 25-foot-wide 1500-mile-long structure was undoubtedly built to keep out invading enemies. To the common people of the empire who had been forced to build the wall it was not worth it however. The wall and other public works completed by the Qin Dynastyhad caused great losses of wealth and human life in the country. As a resultan angry population rose up in rebellion against the Qin Dynastyand in 207 BC the Han Dynasty began.

Because of its rich history and magnificent appearancethe Great Wall attracts tourists scientists and historians to this day and will continue to do so for generations.