The Una’s clear green water flows over travertine barriers built up from mineral deposits, creating a succession of cascades and rapids. Its banks were once lined with wooden watermills, and the area is rich in history, from the prehistoric Iapydes to the medieval fortress of Ostrovica above Kulen Vakuf and the Serbian Orthodox Rmanj Monastery at Martin Brod.
The star attraction is Štrbački buk, the park’s highest waterfall at 24.5 metres, where the river crashes over travertine steps right on the border with Croatia. Upstream, the Martin Brod waterfalls form another beautiful complex of cascades. The Una is also popular for rafting, kayaking and canoeing with licensed local operators, as well as for fishing, hiking, cycling and camping.
Wild yet accessible, the park is a refreshing escape into an unspoilt river landscape.
