Start your stay in Bihać with a walk taking in Fethija, St Anthony’s surviving tower and Gradska otoka. The Djevojka sa Une sculpture brings the centre’s history back to the river. Keep the next day for a chosen park visitor area.
Štrbački buk makes a waterfall-led outing. Martin Brod offers cascades at the Unac–Una confluence and Rmanj Monastery; Kulen Vakuf can be a settlement stop or a different evening base. The Una guide separates the approaches, so each drive has a definite destination.
For three days here, a Bihać afternoon, Štrbački buk day and Martin Brod day give the places room. Rafting can replace a waterfall day or extend the stay; squeezing it into the same departure schedule makes the day depend on an uncertain finish.
An extra heritage outing can take you towards Cazin for Ostrožac rather than another river day. The Cazin tourism site offers a virtual tour of the fortress and a visitor contact. Use that contact for physical admission on your date and ask which interiors you can visit.