I actually didn't plan to go there but had to buy a ticket on my way to toilet.
Probably the most famous nature sight in Croatia and correspondingly crowded. I start with a toy bus, leave it a some point and find a quiet path between the lakes. Later a boat ride takes me back to my car.
Continue to Slunj where there is a tiny waterfall and a place next to it selling beer. For some reason I get a T-shirt as a gift.