Jajce Fortress is a fortress in Jajce, Bosnia and Herzegovina. It was built around the fourteenth century, but it was many times repaired and rebuilt. On the southwest is an entrance with the royal coat of arms. The fortress covers an area of 11 200 m2 and the length of the walls is 1300 meters. Jajce was the last Bosnian town that, in the 1528, fell into the hands of the Ottoman Empire.