Apulum was a fort in the Roman province of Dacia in the 2nd and 4th centuries AD, located in today's Alba-Iulia, Romania. It is the largest castrum located in Romania, occupying 37.5 hectares.
Wikipedia https://en.wikipedia.org/wiki/Apulum_(castra)
Address 13 Strada Unirii, Alba Iulia 510009, Romania
Coordinates 46°4'5.912" N 23°34'23.4" E
