The small Koufonisi Islands have a long and important history as they were the center of Eary Cycladic civilization as shown by the archaeological finds on Epano Mylos. Also, neighboring Keros was one of the most important centers of Cycladic civilization. On Kero, at an Early Cycladic cemetery, findings of great importance have been found. The Koufonisi Islands have been inhabited from prehistoric ages and at various times in history have been pirate bases. They were liberated from the Turks after the revolution of 1821 and were united to Greece along with the remaining Cyclades Islands.