Kurentovanje, the traditional pre-Lenten festival, is primarily organized by the Municipality of Ptuj in Slovenia. This event, which celebrates the arrival of spring and the expulsion of winter, involves various cultural activities, including parades featuring the iconic Kurent masks. The festival also sees participation from numerous local and international groups, showcasing the rich cultural heritage of the region. For more detailed information about the festival and its organization, you can visit the official tourist site of Ptuj.