🇦🇹 Austria · Ancient city
Carnuntum
Carnuntum (from Ancient Greek Καρνοῦς (Carnous) according to Ptolemy) was a Roman legionary fortress (Latin: castra legionis) and headquarters of the Pannonian fleet from 50 AD.
🇭🇺 Hungary · Ancient city
Zalavár–Mosapurc (Mosaburg) Pannonian Centre
Carolingian–Great Moravian (839–907, Pribina–Kocel) · Pannonian Slavic / Carolingian
Island fortress capital of the Pannonian Slavic principality (Mosapurc–Blatnograd) built by exiled Nitra prince Pribina as Frankish vassal 839 and his son Kocel on Lake Balaton islet, with three…