When Galerius had a big victory against the Persians he decided to celebrate with a fantastic building project. The arch and associated palace complex would dominate the streets of Thessaloniki in Greece, and long remembered after the name of Galerius was forgotten. Guest: Assoc. Professor Caillan Davenport (Senior Lecturer, Roman History, Macquarie University/Humboldt Research Fellow, Goethe University, Frankfurt).