To the Romans the Porta Nigra would have been nothing remarkable - while it’s an impressive city gate, there were many like it, offering entrance through the walls into the Roman city of Augusta Treverorum. To today’s residents and visitors to Trier in Germany, it is a reminder of the city’s Roman past, as well an important part of early Christianity.

Guest: Dr Christian Rollinger (Senior Lecturer, Ancient History, University of Trier)