I really recommend that you should come to Tokyo where you will find both very New and Old, Modern and Traditional , both Artificial and Natural, Beautiful and Ugly.
There are some nice Japanese Gardens where you can imagine the peaceful old days where is no Radioactive Contamination or Melt down of Nuclear Plants. Even though we have had many big Earth Quakes.
The Garden of Nezu museum at Minami-Aoyam in Tokyo is one of my favorite Japanese Gardens in Tokyo. Which is not so big and there are many stone lanterns which are very suitable against shining green in early Summer.