Among the ancient structures in the universe include the great wall of China that's said to have been built 2000 years ago. The fortification is situated in the north of China. According to the State Administration of Cultural Heritage the length of the wall is estimated to be 21196.15km. The Great wall was rebuilt as a defense in the Ming dynasty from 1368 to 1644 to prevent Mongolian invasion.
The Great wall is made up of three major components; Walls, signal towers and passes.
Passes were constructed at key positions to allow trade merchants have their way in. Signal towers were made for military communication. They used fire, smoke, banners and other methods to communicate. They were constructed at hilltops to enable high visibility. The wall in general was made for security purposes . It stood 6.5m wide at the base and 5m at the top with also an average height of 7-8m.
Its a minor tourist attraction in China attracting 50 million national and foreign tourists. Over 50 state heads have so far visited the place.
Get to also these wonderful stories in my blog; Astonishing facts of lake Natron and the Great Sphinx of Giza.
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