The city of Plotini

Southeast of Didymoteicho, near the rivers Evros and Erythropotamos is the rocky hill "Agia Petra", which is identified with the Roman Plotinopolis. Written sources say that the emperor Trajan (98-117 AD) founded a city in honor of his wife Plotini. The city developed in the following Christian centuries and was the seat of a bishop. The city walls were rebuilt during the reign of Justinian (527-565 AD). Excavations since 1977 have uncovered various finds which confirm the existence of an important city in Roman times:

• Buildings of the 2nd c. AD, mosaic floors, part of a Roman bath, a built well and other movable finds, coins and pottery, date the inhabitance of Plotinopolis from the 2nd c. until the 6th c. A.D.
• The 24-carat and 25-cm-high golden bust of the Roman emperor Septimius Severus (193-211 AD) from the Plotinopolis is on display at the Archaeological Museum of Komotini.
• A particularly interesting find is the marble relief of a horse and rider, in the type of "Hero of Thrace" or "Thrace Horseman" which could be identified with the mythical Thracian king Rhesus who was killed in Troy and after death was worshiped as a god. 

In addition, the presence of domestic pottery from classical times reveals that the area was inhabited even before the Romans, but this phase remains unknown. Finally, findings of the 5th millennium BC testify to human presence in the late Neolithic Period.