On our way to the Netherlands, we stopped in Japan for three days and tried to see as much as we could. Well, we literally saw to the furthest edges of Tokyo while standing in the Tokyo Tower. As far as your eyes could see, there was no end to the city. It was truly magnificent.
It is a strange thought to think that so many people (estimated around 23 million) can live on a small space of the world, if you compare it to the size of the entire earth.
If you are ever visiting Tokyo, the Tokyo tower is a must on your things-to-see list.