The Walled City of Jajce is a medieval fortified nucleus of Jajce in Bosnia and Herzegovina, with citadel high above town on top of pyramidal-shaped steep hill, enclosed with approximately 1,300 metres (4,300 ft) long defensive walls,. It is one of the best preserved fortified capitals of the Bosnian Kingdom, the last stronghold before to kingdom dissolved under the pressure of military advancement at the onset of Ottoman Empire takeover.