Castra of Bumbești-Jiu - Vârtop - Credit: Wikimedia Commons
The castra of Bumbești-Jiu now known as Vârtop was a fort in the Roman province of Dacia in the 2nd century AD. A contemporary settlement was also unearthed at the fort. The ruins of the fort are located in Bumbești-Jiu (Romania). In the same town, the ruins of an other Roman fort were also unearthed. Read more on Wikipedia
Source: en.wikipedia.org