The International Biennale of Glass (IBG) is the largest and most professionally oriented event in Bulgaria devoted exclusively to glass art. It takes place every two years, between September and October. Guests of the event are international authors and lecturers who introduce the audience to the opportunities and achievements in this field of fine arts. IBG consists of exhibitions with selected works, educational lectures and various workshops in different locations of the country. The events are extremely popular and represent an important part of the cultural agenda of Bulgaria.