One of the benefits of staying at the Hotel New Otani Tokyo was having a beautiful 400 year old garden at your doorstep.  The garden has a variety of trees, flowers, stone gardens, lanterns and an extensive carp pond.  Find a spot in the garden, sit down, relax and you will forget you’re in the middle of one of the busiest cities in the world.  I highly recommend visiting the garden, even if you’re not a guest of the hotel.  It’s worth the trip.