Wikipedia (Dutch) http://nl.wikipedia.org/wiki/Landgoed_Clingendael#Japanse_tuin
Official Website https://www.denhaag.nl/nl/in-de-stad/natuur-en-milieu/groen-en-bomen/parken-bossen-en-duinen/japanse-tuin.htm
More information on The Hague's official website http://www.denhaag.nl/en/residents/to/Japanese-Garden-in-Clingendael-Park.htm
Address (Unnamed Road), 2244, Netherlands
Coordinates 52°6'0.623" N 4°20'0.576" E