The palace itself is not open for public tours because it is the King's place of work. You can, however, access the gardens.
Wikipedia https://pt.wikipedia.org/wiki/Palácio_Noordeinde
Official website http://www.royal-house.nl/topics/noordeinde-palace
Endereço Noordeinde 68, 2514 The Hague, The Netherlands
Coordenadas 52°4'50.938" N 4°18'22.886" E
