In Pyrgos of Agios Nikolaos a prehistorical settlement was developed on a small rocky peninsula, similarly to Lykithos in Toroni. The settlement was developed in the classic years in a city, which probably was Ancient Siggos, from which Sigitikos gulf took its name. Siggos was a colony of Chalcidis. It is mentioned by Herodotus among the cities that were recruited by Xerxes. After “Midika” it became a member of the Athenian Alliance. The residents took part in the settlement of Olynthos, after however the Nikia peace (421BC) returned and settled again in their homeland. From draft archaeological observations it results that the town existed in the Hellenistic years. Today from the ancient city the revetments of cargo operations in the North coast of the peninsula are well discerned.
In the 14th century the monastery of Agios Nikolaos Hrisokamaros was built in the peninsula which constitutes a monastery dependency of the monastery “Ksenofon”. Form the building group the tower in a ruined condition is saved (from which the area took its name) and the foundations of the cells on the peak line of the peninsula.