Kos Kos Kos or Cos (; ) is a Greek island, part of the Dodecanese island chain in the southeastern Aegean Sea, off the Anatolian coast of Turkey. Kos is the third largest island of the Dodecanese by area, after Rhodes and Karpathos; it has a population of 33,388 (2011 census), making it the second most populous of the Dodecanese, after Rhodes. The island measures , and is from the coast of the ancient region of Caria in Turkey. Administratively, Kos constitutes a municipality within the Kos regional unit, which is part of the South Aegean region. The principal town of
Astypalaia Astypalaia Astypalaia (Greek: Αστυπάλαια, ), is a Greek island with 1,334 residents (2011 census). It belongs to the Dodecanese, an archipelago of twelve major islands in the southeastern Aegean Sea. The island is long, wide at the most, and covers an area of 97 km. Along with numerous smaller uninhabited offshore islets (the largest of which are Sýrna and Ofidoussa), it forms the Municipality of Astypalaia, which is part of the Kalymnos regional unit. The municipality has an area of 114.077 km. The capital and the previous main harbour of the island is Astypalaia or Chora, as it is called