City walls in Greece

Historic complex of walls built around the city of Thessaloniki, Greece

thumb|Ruins of the church of Saint Francis Glarentza (), also known as or Clarenia, Clarence, or Chiarenza, was a medieval town located near the site of modern Kyllini in Elis, at the westernmost point of the Peloponnese peninsula in southern Greece. Founded in the mid-13th century by William II of Villehardouin, the town served as the main port and mint of the Frankish Principality of Achaea, being located next to the Principality's capital, Andravida. Commerce with Italy brought great prosperity, but the town began to decline in the early 15th century as the Principality itself declined. In

Medieval castle in the city of Ioannina, Greece

historical fortifications of Greek city

building in Heraklion Municipality, Crete Region, Greece

defensive structures around Chania, Crete, Greece