Wikipedia (Japanese) http://ja.wikipedia.org/wiki/%E5%85%AB%E8%8A%B3%E5%9C%92
Official website http://www.happo-en.com/english/index.html
More information http://www.japanesegardens.jp/gardens/secret/000104.php
Twitter https://twitter.com/happoenPR
Facebook https://www.facebook.com/happoen
Email contact@happo-en.com
Phone +81 3 3443 3111
Address 白金台1-1-1, Minato-ku, Tokyo, Japan 108-8631
Coordinates 35°38'17.86" N 139°43'45.704" E
