From the 1-st of June, 2023. Start your Zrmanja Kayaking Croatia River trip in the village of Kastel Zegarski. Where you will find intact nature, clear waters, and a bounty of flora and fauna. Therefore it makes River Zrmanja one of the most beautiful Croatian and European rivers. So, kayaking the Zrmanja River, down its rapids and falls will be both a fun and memorable experience.