Red Light Districts in The Hague:
*Geleenstraat / Hunstraat - still active
*Doublestraat (in the old town) - still active
*Poeldijksestraat - was closed down in 1999 and the buildings demolished in 2006.
There is also a car pick-up zone in Lulofstraat
You can read more from Den Hague WikiSexGuide: http://www.wikisexguide.com/wiki/The_Hague