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The Great Wall of China was built over 2000 years ago and is the longest man-made structure ever built. It is an instantly recognisable structure which many people are familiar with, though often know little about.
The Great Wall of China is approximately 6000 kilometre long. In places the Great Wall is 25 feet tall. It ranges from 15 to 30 feet wide. The original Great Wall was built over a period of approximately 20 years. Most of the current Great Wall was built during the Ming dynasty (between 1368 and 1644.).
Many thousands of people were involved in the building of the wall. From records, it appears that 300,000 soldiers and 500,000 common people were involved in constructing the original Great Wall. Many people lost their lives during this work and archaeologists have discovered many human remains buried under sections of the wall.
It is believed that the main purpose of the Great Wall was to protect China from invasion or attack by northern tribes.