Only the palace garden is open to public. It opens in the morning and closes between 4 p.m. and 6 p.m. depending on season.
Wikipedia https://zh.wikipedia.org/wiki/克讷特代克宫
地址 20 Kneuterdijk, Den Haag 2514EN, Netherlands
坐标 52°4'52.571" N 4°18'29.449" E