Bargala was a Byzantine fortified town constructed between the 4th and 6th century, a period spanning Late Antiquity and Early Byzantium. Today it is an archaeological site and a visitor attraction in the Karbinci Municipality. It is located 20 km northeast of the modern city of Štip on the lower slopes of the Plačkovica mountain. Archaeological excavations have uncovered a basilica, trade quarters, a water tank, a bath, and a fortification system with an impressive main gate and infrastructure.
Gold coins of Emperor Phokas (602-610) are discovered at the locality, as well as 6th and 7th century Slavic pottery.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.