Old Pylos castle is a 13th-century fortress near Pylos, Greece. It is one of two castles guarding the strategic bay on which it sits; the other is New Pylos castle. It is also known by its historical Italian and Turkish names, respectively Old Navarino and Anavarin-i atik. Locally, it is simply Palaiokastro (Greek: Παλαιόκαστρο, "old castle"). The castle sits atop an imposing 200-m rock formation on the northern edge of the bay, flanked by sheer cliffs; the naturally defensible site has probably been occupied since classical times.[1] Although there are no physical barriers to access, the castle ruins have been declared "closed" because the structure is considered dangerous.