Kasos is the southest island of Dodecanese islands and is very close to Karpathos and Crete.
Homer mentions the island as being one of those that took part in the Trojan War.
Kasos was famous from antiquity for its fleet, its nautical tradition and commercial activities that made it a rich island. Due to its closeness with Crete the islands developed a commercial and nautical activities. In 1824 the people of Kasos helped the rebelled Cretes with their fleet and for revenge the Turks destroyed the island.
In 1948 Kasos was united with Greece like the rest of the other Dodecanese islands.
Kasos coasts are rocky with only a few beaches for swimming.
In the capital Fri, characteristic is the stone houses that maintain the traditional dodecanesian architecture. The main settlements of the island are those of Agia Marina and Arvanitochori with 500 inhabitants.