The remains of the Castle can be visited
Visoko Castle

The castle ruin of Visoko, a medieval fortress, is located on an elevated position in the Federation of Bosnia and Herzegovina. As a royal castle town in the 14th century, it played an important role in the region's history.
History+
The first documented mention of Visoko Castle occurred on September 1, 1355, in a charter by the young Ban Tvrtko I of Bosnia, where it was referred to as “in castro nosto Visoka vocatum”. The complex served not only for defense but was also a place where numerous medieval Bosnian rulers drafted important documents and charters.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://en.wikipedia.org/wiki/File:Old_town_Visoki.jpg
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 43.9768, 18.1763