Bakhtrioni

Bakhtrioni is a ruined 17th-century fortress in the eastern Georgian region of Kakheti, on the left bank of the Alazani river near its confluence with the Ilto. The fortress served as a Safavid Iranian outpost in the 1650s until the rebellious Georgians captured and demolished it. Only insignificant ruins of the Bakhtrioni fortress have survived.

Source: Wikipedia