As little kids, my sister and I would often dig in the sandbox. Most of the time the imagined goal was the same - dig to China. I would have been greatly disappointed if I had done all that digging just to find out that the other side of the world was just the middle of the ocean. Luckily modern children don't need to waste their time digging... they just have to go to this website. It shows you what is on the exact opposite side of any point on earth. (Don't get your hopes up too high, odds are the other side is ocean).