Modern equivalents marked with an*asterisk are approximations only
Adrianople – Edirne, Thrace, European Turkey
Aemona – Ljubljana, Slovenia
Altai Mountains – mountain range in western Mongolia, sacred to the Huns and to many other peoples
Aquileia – present-day city dates only from Middle Ages
Aquincum – Budapest
Argentoratum – Strasbourg
Augusta Treverorum – Trier
Aureliana – Orleans
Azimuntium – in Thrace, precise location unknown
Bononia – Bologna
Britain – England and Wales
Burdigala – Bordeaux
Cameracum – Cambrai
Carbonarian Forest – the Ardennes*
Carnuntum – Petronell, Austria*
Carthago Nova – Cartagena, Spain
Catalaunian Fields – near Chalons in Champagne,
France, precise location unknown
Cisalpine Gaul – Lombardy
Colonia Agrippina – Cologne
Constantinople (also Byzantium) – Istanbul
Corduba – Cordova
Dacia – Romania
Dumnonia – Devon
Dyrrachium – Durres, Albania
Euxine Sea – the Black Sea
Fiorentia – Florence
Gades – Cadiz
Gallia Narbonensis – southern France*
Gaul – France
Gessoriacum – Boulogne
Hungvar – the Hungarian plain
Illyricum – Croatia/Bosnia/Serbia/Albania*
Isca Dumnoniorum, also Esca – Exeter
Lauriacum – Enns, Austria
Leptis Magna – Labda, Libya
Londinium – London
Lutetia – Paris
Maeotis Palus – the Sea of Azov
Marcianople – Devnya, Bulgaria
Margus – Pozarevac, Serbia
Massilia – Marseilles
Mauretania – Morocco*
Mediolanum – Milan
Mediomatrice – Metz
Mincius – River Mincio, Northern Italy
Moesia – northern Bulgaria/Macedonia*
Moguntiacum – Mainz
Mosa – River Meuse
Naissus – Nis
Narbo – Narbonne
Neapolis – Naples
Noricum – Austria*
Padus – River Po
Panium – a humble and unremarked little town in Thrace
Pannonia – Hungary*
Parthia – Persia, Iran*
Philippopolis – Plovdiv, Bulgaria
Ratiaria – Archar, Bulgaria*
Rhaetia – Switzerland
Rhemi – Rheims
Sardica – Sofia, Bulgaria
Scythia – Russia, Ukraine*, Kazakhstan*, and all points east
Sequana – River Seine
Singidunum – Belgrade
Sirmium – Sremska Mitrovica, Serbia
Tanais – River Don
Tingis – Tangier
Tolosa – Toulouse
Tornacum – Tournai
Trajanopolis – Maroneia, Greece*
Utus – River Vit, Bulgaria
Vangiones – Worms
Viminacium – Kostolac, Serbia