Tripolitania connected the southern Mediterranean coast to caravan routes and maritime exchange networks of Roman North Africa.
Africa Proconsularis formed one of the principal urban and administrative centres of Roman North Africa where Mithraic cults circulated through prosperous civic networks.
Histria connected the northern Adriatic to the Balkan and Danubian worlds through maritime and regional communication networks.
Bactria occupied a distant eastern horizon associated with Iranian cultural traditions and the wider background of Mithraic interpretations.
Transpadana occupied the northern plains of Italy where major communication routes connected the peninsula to the Alpine and Danubian worlds.
Cyrene linked North Africa to the Greek East through long-standing urban traditions and eastern Mediterranean maritime exchange.
Aemilia connected northern and central Italy through prosperous urban centres and major communication routes of the Roman Peninsula.
Persia occupied a central place in ancient and modern interpretations concerning the origins and eastern background of Mithraic traditions.
Along the northern frontier of Roman Britain, Britannia inferior preserves important evidence linked to military and frontier communities.
Britannia superior preserves a substantial body of Mithraic evidence associated with military sites and urban centres of Roman Britain.
Armenia occupied a frontier crossroads between the Roman world, Anatolia and the Iranian cultural sphere.
Aegyptus occupied a unique position within the Roman world where Mediterranean trade, Nile networks and ancient religious traditions intersected.
Liguria linked northern Italy to southern Gaul and the western Mediterranean through coastal and Alpine communication routes.
Venetia connected northern Italy to the Adriatic and Danubian worlds through trade, mobility and imperial communication routes.
Etruria formed part of the cultural and religious heartland of central Italy closely connected to Rome and the Tyrrhenian world.
Umbria formed part of the central Italian heartland through which religious practices circulated between Rome and the northern provinces.
Picenum connected the Adriatic coast of central Italy to inland communication routes and the wider networks of the Roman Peninsula.
Samnium occupied a mountainous region of central Italy linked to Rome through military movement and regional urban networks.
Lucania connected inland southern Italy to the Tyrrhenian and Ionian maritime worlds through regional communication networks.
Bruttium occupied the southernmost reaches of the Italian Peninsula where maritime mobility linked Italy, Sicilia and the wider Mediterranean.
