The Dubovac Castle overlooks the Croatian city Karlovac. Its square tower was probably built during the 13th century. In the 15th century, the castle was rebuilt in Renaissance style.

Sokolac Castle was an extremely grand building, dominated by the powerful perpendiculars of the entry tower, and the Chapel of the Holy Trinity. It dates back to medieval times, while the town was held by the noble Frankopan and Gorjanski families. The castle was part of an important medieval fortified city held by Frankopan family.

Senia was a thriving town in the Roman province of Dalmatia, used by the Romans as a stronghold against the Illyrians in the 2nd century BC. After the fall of the Roman Empire, the Avars and the Croats eventually settled here in the 7th century AD.