 The head town of the municipality () is Kastelli-Kissamos itself.Strabo said that ancient Cisamus was dependent on Aptera and was its naval arsenal.The Peutinger Table distinguishes two port towns in Crete called Cisamus, Modern Kissamos (at 35°29′38″N 23°39′25″E) is much further west than where Aptera is now placed (at 35°27′46″N 24°8′31″E).