Diocletian Confers at Carnuntum

Date: November 11, 308 • Location: Petronell-Carnuntum, Austria

At Carnuntum, Emperor emeritus Diocletian confers with Galerius, Augustus of the East, and Maximianus, the recently returned former Augustus of the West, in an attempt to end the civil wars of the Tetrarchy.

Carnuntum was a Roman legionary fortress and headquarters of the Pannonian fleet from 50 AD. After the 1st century, it was capital of the Pannonia Superior province. It also became a large city of approximately 50,000 inhabitants.