Venue: Lecture hall of the Rheinisches Landesmuseum in Trier, Weimarer Allee 1, 54290 Trier. An event in the context of the Rheinland-Pfalz state exhibition "The Fall of the Roman Empire" at the Landesmuseum Trier. A cooperation with the Directorate Rheinisches Landesmuseum Trier, Generaldirektion kulturelles Erbe GDKE Rheinland-Pfalz and the Landeszentrale für politische Bildung LpB Rheinland-Pfalz. What did "border security" look like in late antiquity compared to today? How did the borders of Europe develop historically? This will be discussed by Prof. Dr. Johannes Paulmann, Director of the Department of Universal History at the Leibniz Institute of European History in Mainz, Dr. Christof Flügel, archaeologist and chief conservator from the Landesstelle für die nichtstaatlichen Museen in Bayern, Munich, and Dr. Sascha Werthes, research associate at the Chair of International Relations and Foreign Policy at the University of Trier. Moderation: Prof. Dr. Volker Wilhelmi, Institute of Geography, Johannes Gutenberg University Mainz. The entrance is free.