This postcard sender asks me, "Have you been to Great Wall? It's really amazing." No, I haven't been to the Great Wall, but it does look amazing! It looks pretty cool lit up at night, doesn't it? This card arrived in my mailbox on October 2, 2009.
Even lit up, it cannot been seen from space. Looking at the Great Wall from the moon would be like looking at a human hair from two miles away! For more on the Great Wall, see the article here: http://en.wikipedia.org/wiki/Great_Wall_of_China