 Cyclopean fortifications were typical of Mycenaean walls , especially at the citadels of Mycenae , Tiryns , Argos , <unk> and Athens , while smaller boulders are found in Midea and large limestone slabs are found at Gla . In the Mycenaean settlements found in Epirus and Cyprus , Cyclopean style walls are also present , as well as in western Anatolia . Besides the citadels , isolated forts were also erected on various strategic locations . The fortification systems also incorporated technical refinements such as secret cisterns , galleries , sally ports and projecting bastions for the protection of gateways . On the other hand , the palace of Pylos , although a major center of power , paradoxically appears to have been left without any defensive walls . 
