The maritime part of Mygdonia formed a district called Amphaxitis, a distinction which first occurs in Polybius, who divides all the great plain at the head of the Thermaic gulf into Amphaxitis and Bottiaea, and which is found three centuries later in Ptolemy.
The new wing hosts two exhibitions: The Gold of Macedon, with artifacts from the cemeteries of Sindos, Agia Paraskevi, Nea Filadelfia, Makrygialos, Derveni, Lete, Serres, and Evropos; and The Thessaloniki Area in Prehistory, with material from prehistoric settlements, dating from the Neolithic to the Early and Late Bronze Age.