dubovac castle in karlovac, croatia

karlovac croatia castle dubovac september balkans europe architecture summer travel tourism tree european union croatian landmark buildings old medieval history historical fort fortress stone windows walls rural rustic exterior outside outdoors outdoor north east south northern eastern southern sunny sunshine wooden town stari grad traditional heritage turret stronghold tower monument vacation holiday destination renaissance defensive strength strong defence fortified 12th 13th century twelfth thirteenth grass hill historic central dates