Hellenistic acropolis (early 3rd century BC). The isodomic fortification wall, 2.50m. thick, is built of limestone blocks and surrounds a doublepeaked knoll. Towers, 7m wide, are spaced across its course. The site is identified with the ancient Thessalian city of Proerna.

Location

Gynekokastro is located 15 km SW of Kilkis Town, 45 km. of Thessaloniki town  35 km of Goumenissa.

History

The castle was built by  Andronikus the 3rd the Paleiologos, during his kingdom (1328-1341). The most probable year ofr it's construction is  1334right after the redefinition of the bysantine-serbin borders to the further south.
It was built to protect from the attacks atempted  frm the North -mainly by the Serbs wich was an upcoming force- as well as to protect the town of Thessaloniki. It was also used as the place where all the crops of the Macedonian valley where concentrated in order to be protected.
It was named  "Gynekokasto" (gynaika=woman + kastro=castle), as it was implied that the fortification was so strong that even women would defend it.