The castle is situated adjacent to the main port of Chios, and its east side borders the sea.

It consists of an inhabited area surrounded by a large stone wall structure with various fortifications purposed to defend the enclosed population and properties against naval attack and siege.

The structures surviving to this day are part of later construction and expansion dated to the time when the Genoese, who maintained commercial concerns, ruled the island during the 14th to the 16th century.

It is a large semi-underground water reservoir with vaults forming four quarters divided by a cross on its roof that is supported by eight shafts.

“The pumping of water was originally performed through a large dome-roofed elevated arcade that was extending all along the eastern part of the tank and later on through a short cistern in its southeast corner.” Professor Char.