The Dodecanese Flotilla is an irresistible proposition for more experienced sailors with a combination of some of the better known and more cosmopolitan Greek Islands such as Kos with its noted ancient sites and great beaches, and of some of the smaller and lesser known gems of the Dodecanese such as Nysiros, Halki or Symi. Sail either the Kalymnos Route or the Symi Route starting from Kos .