I visited Katsura Imperial Villa in Kyoto. The garden at Katsura Imperial Villa is one of the most beautiful Japanese gardens. I guarantee that this is quality landscape design that you should see.
If you want to visit there, it is necessary to apply for visit on the website of Imperial Household Agency of Japanese government and to join a tour. It was very hot day in Summer when I visit there. But I enjoyed seeing this beautiful garden much. The good thing is that photography on site is allowed now although it was not before.
If I mention one great character of Katsura from the view of landscape architect, it will be a great interrelation between architecture and garden. So many interesting scenes are made when you walk garden paths and look at the garden from buildings. I can imagine how phenomenal views I can enjoy if I have a cup of green tea at the tea house there. (T)