In this article, we chose to focus only on the Castles in the Peloponnese, because of their historical importance, and their magnetic beauty. However, we would like to say a few words on the castles scattered all over the country. Greece is one of the few countries in the world with so many castles and fortresses. It is no exaggeration to say that in Greece there are over 600 castles and fortresses. Some small and some big, some ancient and some medieval, and well-preserved. The castles of Greece are not just a part of the distant past. The forts that lived glorious moments in the Middle Ages but they have occupied the international European political and war scene many times in recent history.