The Great Wall is 5,500 miles long. That’s a difficult number to grasp. According to Google maps, you need to drive 2,905 miles to get from New York to California. So it’s as if a giant wall existed along that route.

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2,905 miles
And then as if a wall was built along 984 miles of this route, and the remaining 1,970 miles were trenches or natural defense barriers. (Getting this composition from BBC.)
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2,554 miles
A map of the Great Wall. Most of what remains was built in the 16th century during the Ming dynasty to keep the Monguls out.
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source: BBC
Two weeks ago I went with my dad’s friend Tina and her boyfriend to (Badaling), the most visited section of the Great Wall, receiving millions of Chinese and 老外 tourists each year. This is the section of the Great Wall President Nixon visited in 1972.

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sourece: http://www.ford.utexas.edu/museum/exhibits/China_exhibit/images/large%20Nixon.gif
After the break are some pictures from my trip to .