Castra Potaissa
Turda, Romania
Potaissa was a legionary fortress and later a city in the Roman province of Dacia, located in today's Turda, Romania. It appears on the Tabula Peutingeriana (Segmentum VIII) as Patavissa between Salinae and Napoca.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).