I think we all have heard this, “Great Wall of China is the only man made object visible from space”. It seems like that is wrong. The following are “visible from space”:http://story.news.yahoo.com/news?tmpl=story2&u=/space/whatsreallyvisiblefromspace
* highways
* airports
* dams
* large vehicles
* harbors
* ships
* tankers
* Egyptian Pyramids
So next time someone tells you about the Great Wall, correct them.
I thought the claim was “visible from the moon”.
The claim about the Great Wall is an old chestnut that has been discredited many times.It would be interesting to find out how the urban legend originated.