Based on the analyses of preserved built structures, old depictions and photos, particulars regarding the history of the property, as well as appropriate analogies, it is possible to determine the main development phases of one of the most recognizable historical castle architectures in the Upper Savinja Valley. The castle was most probably built in the second half of the twelfth century and underwent at least three expansions during the Late Middle Ages. In the sixteenth century, it obtained its outer wall with three cylindrical towers and in the seventeenth century it was transformed into a Renaissance-style residence of Ljubljana’s bishops. During the eighteenth and nineteenth centuries, the castle underwent no major construction work. The medieval castle core was demolished in the eighteenth century. In 1900, it was restored and added a Historicist chapel sometime between 1917 and 1920. After it was destroyed in the Second World War, the castle underwent a gradual and thorough restoration during the second half of the twentieth century.