Jajce - a city of stone, light and water, the royal castle, town-museum under the open sky, was built on the banks of the rivers Pliva and Vrbas. Near the city are the Big and Little Pliva Lakes, between which small watermills have been built, known as Mlincici among the people in Jajce. The strongest determinant of the city, his trademark, is the magnificent 17-meter-high waterfall (the place where the series of travertine rocks of the river Pliva plunges into the river Vrbas). The waterfall decorates the center of town, which makes this place unique in the world.

In this small space opens extraordinary ability to capture a single glance four empires (Roman, Byzantine, Ottoman and Austro-Hungarian), three kingdoms (Bosnia, Hungary and Yugoslav), three world monotheistic religions - Christianity (Orthodoxy and Catholicism), Islam, and Judaism - the most diverse architectural styles, andeveryday customs.

Given the great historical significance and townscape value, significant archaeological remains and objects as well as its outstanding natural beauty, this city is classified among the units of special importance from the viewpoint of heritage. A set of material and natural values is a unique quality, and the result of many centuries of human life, in particular social, historical and cultural conditions.