The Pyrgos Castle’s (Kasteli) external walls were created by houses which were almost contiguous, very thick and high with a few air openings.
Below the castle there used to be a system of passageways, used for protection or even escape in times of need. The outer contour of the castle was irregular and polygonal. In its center, stood the small square with the churches of Panagia and Agios (Saint) Georgios. A cobbled road separates the castle from the buildings of the contemporary part of the settlement.