Pannonia Inferior

Sirmium was a city in the Roman province of Pannonia, located on the Sava river, on the site of modern Sremska Mitrovica in the Vojvodina autonomous province of Serbia. First mentioned in the 4th century BC and originally inhabited by Illyrians and Celts, it was conquered by the Romans in the 1st century BC and subsequently became the capital of the Roman province of Pannonia Inferior. In 293 AD, Sirmium was proclaimed one of the four capitals of the Roman Empire. It was also the capital of the Praetorian prefecture of Illyricum and of Pannonia Secunda. The site is protected as an archaeologic

Province of the Roman Empire (103-3rd century)

province of the Roman Empire

Roman province (296 - mid-5th century)

thumb|On this map of the Pannonian Limes, Colonia Aelia Mursa is located in the south, on the routes between [[Poetovio to the west, Sopianae to the north and Cibalae to the south.]]