The Japanese gardens, just like the Chinese, were designed for aesthetic pleasure, recreation – as an extra room, or meditation and contemplation. They worked like a spa for the soul, and still do. Often the tea house gardens were more rustic. Typical features of the roji, (roji =dewy ground) tea house garden, are the lanterns, toro, and stepping stones, tobi ishi.
Hard to believe that you’ll find this garden in central Tokyo, don’t you think?