massive boulders form the walls of the fortress and palace of tiryns in greece.

abandoned acropolis agamemnon age akropolis ancient archaeological archeology architecture argolida attraction building carving citadel city civilization classic culture defense defensive entrance exterior fort fortification fortress gate greece greek heritage historic history monument mycenae mycenaean mykene passageway peloponisos peloponnese rock ruin sculpture site statues stone structure sunny tiryns unesco wall