Sirmium (Sremska Mitrovica)

 museum, archaeological site, interesting place

Sirmium was one of the oldest human settlements in Europe. Archaeologists have found a trace of organized human life on the site of Sirmium dating from the 5000 BC. When the Romans conquered the city in the 1st century BC, Sirmium already was a settlement with a long tradition.
In the 1st century, Sirmium gained a status of a colony of the citizens of Rome, and became a very important military and strategic location in Pannonia province. The war expeditions of Roman emperors Traian, Marcus Aurelius, and Claudius II, were prepared in Sirmium.
In 103, Pannonia was split into two provinces: Upper Pannonia and Lower Pannonia, and Sirmium became the capital city of Lower Pannonia.
In 296, Diocletian operated a new territorial division of Pannonia. Instead of previous two provinces, there were four new provinces established in former territory of original Pannonia: Pannonia Prima, Pannonia Valeria, Pannonia Savia and Pannonia Secunda. Capital city of Pannonia Secunda was Sirmium.