NP Paklenica
Two karst river canyons, Mala (small) and Velika (you guessed it, big) Paklenica make up this national park that can only be enjoyed on foot so pack up your hiking gear. There are over 150 kilometers of trails from the light ones intended for tourists, to the really heavy routes great for mountaineering, leading all the way to the highest peaks of Velebit. Not recommened if you are wearing flip-flops.
NP Paklenica