The archeological site "Bargala" is an ancient city located 12 km. northeast of Stip near Gorni Kozjak at an altitude of 625 m.
It was built in the shape of an irregular rectangle as a strategic Roman camp in the IV century from whence the Roman legions fought to the east.
After the city loses its strategic importance, the military camp will be demolished, and the inhabitants will build a new settlement along the river Kozjachka which in the V-VI century will grow into a civil episcopal city.
In the V and VI century, and especially in the time of Justinian I (527-565), the city reached its peak.
The city survived the earthquake of 518, but not the Avar-Slavic attacks of the late VI and early VII century.
The continuity of the church tradition in that area is confirmed by the church "St. Gjorgji” for which there are theories that it was built in the period of IX-X century in parallel with the Christianization of the Slavs in the valley of Bregalnica, and this only confirms that life in the area of Bargala did not stop even in the Middle Ages.
The city is surrounded by a massive stone wall with 20 square towers. A large number of buildings have been preserved, but the most representative are the episcopal basilica and the episcopal residence with their accompanying buildings, the baptistery, the baths, the glass workshop and the winery. In the episcopal basilica there is a mosaic floor made in "opus sectile".
In the architecture of the city, the construction opus "opus incertum" prevails and besides the Episcopal Basilica, the City Basilica, the Basilica Extra muros (outside the walls) as well as many other utilitarian and residential buildings have been found.
The necropolis on the Bargala site is located on the other side of the Kozjachka River.