The remains of the Castle can be visited
CastleSrebrenik
Srebrenik Fortress

Srebrenik Fortress (Bosnian: Utvrda Srebrenik) is a fortress located near the town of Srebrenik in Bosnia and Herzegovina.
Srebrenik Fortress is Bosnia's best-preserved medieval castle dating from 1333. It is located in the outskirts of Srebrenik.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Martin Brož / CC BY 3.0 via Wikimedia Commons
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: 44.7037, 18.5313