9. The Great Wall of China
These walls are extremely large as they cover thousands of miles long. It is situated atop a mountain ridge in the country of China, its position atop a mountain ridge helps to deliver an awe-inspiring view of the whole area. The sight of this man-made wall has left many of its visitors an unforgettable experience because it is hard to believe that such a structure was carried out by the hands of the ancient men.
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