Nicopolis ad Istrum or Nicopolis ad Iatrum was a Roman and Early Byzantine town.
Its ruins are located at the village of Nikyup, 20 km north of Veliko Tarnovo in northern Bulgaria. The town reached its zenith during the reigns of Hadrian, the Antonines and the Severan dynasty.
Archaeological excavations are continuing to reveal more of the city.
The site was placed on the Tentative List for consideration as a World Heritage Site by UNESCO in 1984.
Wikipedia https://en.wikipedia.org/wiki/Nicopolis_ad_Istrum
Address Bulgaria
Coordinates 43°13'2.722" N 25°36'42.91" E