You can't see the Great Wall of China from outer space, and no manmade structure is visible from outer space without one hell of a telescope.
For some reason, some urban legends tend to get stated and never disappear. This legend even appears as a erroneous Trivial Pursuit question. The legend? Many are familiar with the claim that the Great Wall of China is the only man-made object visible from space or from the moon with the naked eye. This is simply not true.
What man-made structure is visible from outerspace?
The ISS.
Ahahahahah!
...
This joke won't make sense once they knock that thing out of orbit.
