Travnik Fortress is the best-preserved Ottoman-era fortress in central Bosnia, perched on a rocky spur above the old town with commanding views over the Lašva Valley. The walls, towers, and inner courtyard date largely from the 15th and 16th centuries, built to guard the approaches to Sarajevo from the west. The site is open and the climb up through the old quarter is half the pleasure.
From the upper towers on a clear day you can see the slopes of Mt Vlašić to the north and the valley road disappearing toward Sarajevo to the east — roughly the same view that Ottoman governors and visiting consuls would have had. The walk up is steep but short, taking 15–20 minutes from the bazaar area. The fortress is particularly atmospheric in the early morning before day-trippers arrive.