The Days of National Costumes and Clothing Heritage are considered to be the biggest ethnological festival in Slovenia. The beginnings date back into 1966 when Kamnik citizens organized the Day of National Costumes. Already then, a great number of educational societies and individuals attended the event. The event has changed names a few times, so in 1986 Kamnik hosted the 16th Days of National Costumes, Folklore and Crafts, which later changed to Days of National Costumes and Clothing Heritage.