This fortified complex beneath the slope of Mount Psunj is one of the most important sacral monuments of the Middle Ages in Slavonia. Romanesque church of St Michael, with stone ashlars (cantilevers) – the famous heads of Rudina, represents the richest accomplishment of Romanesque sculptures in Croatia. Here is found the first Croatian writing written in Latin alphabet – BROTHER IAN, Glagolitic writing indicating the year 1129, Latin script and Bosancica from the 15th century.