So, can you recommend two or three spots that one shouldn´t miss on Risnjak?

I would recommend visiting the source of the river Kupa which is at the park´s lowest point, situated in an oval pond that is 50 meters wide. The pond has so far been researched many times in order to determine its depth. The researches so far discovered only that the water springs out of two separate channels. The narrower channel is 86 m deep and the wider one 57 m.
The river´s source can be reached by half an hour's walk from the village of Razloge, so it is an excellent way to be active during your holiday, too