"He who has not climbed the Great Wall is not a true man" Mao Zedong.

Great Wall of #China, Chinese (Pinyin) Wanli Changcheng or (Wade-Giles romanization) #Wan-li #Ch’ang-ch’eng (“10,000-Li Long Wall”), extensive bulwark erected in ancient China, one of the largest building-construction projects ever undertaken. #TheGreatWall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the #EurasianSteppe. Several walls were being built as early as the 7th century BC; these, later joined together and made bigger and stronger, are collectively referred to as the Great Wall.

The Great Wall begins in the east at #Shanhaiguan in Hebei province and ends at #Jiayuguan in Gansu province to the west. Its main body consists of walls, horse tracks, watch towers, and shelters on the wall, and includes fortresses and passes along the Wall. Other purposes of the Great Wall have included border controls, allowing the imposition of duties on goods transported along the #SilkRoad, regulation or encouragement of trade and the control of immigration and emigration. A comprehensive archaeological survey found that the entire wall with all of its branches measure out to be #21,196km (13,171 mi). Today, the Great Wall is generally recognized as one of the most impressive architectural feats in history.

One of the earliest known references to the myth that the Great Wall can be seen from the moon appears in a letter written in 1754 by the English antiquary #WilliamStukeley. Stukeley wrote that, "This mighty wall of four score miles [130 km] in length is only exceeded by the Chinese Wall, which makes a considerable figure upon the terrestrial globe, and may be discerned at the Moon." The claim was also mentioned by #HenryNorman in 1895 where he states "besides its age it enjoys the reputation of being the only work of human hands on the globe visible from the Moon." The claim that the Great Wall is visible from the moon also appears in 1932's Ripley's Believe It or Not! Strip and in #RichardHalliburton's 1938 book Second Book of Marvels.

Leroy Chiao, a #Chinese-American astronaut, took a photograph from the International Space Station that shows the wall. It was so indistinct that the photographer was not certain he had actually captured it. Based on the photograph, the China Daily later reported that the Great Wall can be seen from 'space' with the #nakedeye, under favorable viewing conditions, if one knows exactly where to look. However, the resolution of a camera can be much higher than the human visual system, rendering photographic evidence irrelevant to the issue of whether it is visible to the naked eye.

Search Companion: Great Wall of China – Historical Place in Beijing, China, Great Wall of China, Wall of China, The Great Wall of China, Historical Place in Beijing China, Beijing, China, Chinese, Chunqiu period, Megan Campisi, Wallofchina, Great Wall, Man made Structures Visible from Space, Human Hands on the Globe Visible From the Moon, Great Wall of China Length, Great wall vlog, Visiting the Great Wall of China, Beijing Great Wall, The Great Wall of China Travel, Great Wall Tour, Great Wall of China Trip,

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