LTC Dr. Željko Heimer held the lecture »Croatian Municipal Identity – Coats of Arms and Flags of Cities and Communties in Croatia«, in the small classroom of the Trešnjevka Cultural Centre, on 16 May 2019, as part of the cycle »Croatian Symbolic Identity«. The lecture cycle is a joint project of the Trešnjevka Cultural Centre and the Croatian Heraldic and Vexillological Association. The project is led by Ass. Prof. Dr. Tijana Trako Poljak. The Trešnjevka Cultural Centre coordinator is Veselko Leutar, sociologist, head of the Sociocultural Department.