were constructed with sun-dried bricks on stone socles. Other fortified settlements include Tiryns, which covered an area of 5.9 hectares sustaining 1,180–1,770 people, and had a large tiled two-storeyed "round house" () with a diameter of 28 m on the upper citadel. It may have served as a palace or temple or perhaps it was a communal granary. Other sites include Ayia Irini, which covered an area of 1 hectare and had a population of perhaps up to 1,250; Eutresis covering 8 hectares with an estimated population of 1,600–2,400; Thebes covering 20 hectares with a population of 4,000–6,000; Lefkandi (unknown in size and population); and Kolonna (or Aegina), a densely populated settlement with impressive fortifications, monumental stone buildings and sophisticated town planning. Already before 2500–2400 BC, Kolonna experienced remarkable economic growth and had its own administrative "Corridor House", the so-called . During the phase Aegina III 2400–2300 BC, which corresponds to the transition phase Lefkandi I-Kastri, the evidence of the economic structure and administrative and social organization of the community become more clear. The "White House" (; 165 square metres) constitutes the monumental community building that succeeds the , which had the same function. Kolonna may constitute the Aegean's first state as it appears to be the earliest ranked society in the area outside Minoan Crete and perhaps a political center in the Middle Helladic period where it achieved state-level after the Minoans but before the Mycenaeans. See also History of Greece Linear B Mycenaean Greek Pelasgians Eutresis culture Bronze Age References Citations Sources Further reading External links Chronology