The Mutlimetia show with lasers and lights take place on Friday and Saturday nights at 9:30 pm from May to September. In other times the fountrain operates without the light and sound effects from 08:30 am - 10:30 pm.
Wikipedia http://pl.wikipedia.org/wiki/Multimedialny_Park_Fontann_w_Warszawie
Official Website http://parkfontann.pl/
Endereço Skwer I Dywizji Pancernej Warsaw, Poland
Coordenadas 52°15'14.354" N 21°0'41" E