The Bronze Age (approx.3000-1100 B.C.) is marked by the appearance of the first urban centres in the Aegean region (Poliochni on the island of Limnos), as well as by the flourishing settlements on Crete, mainland Greece, the islands of the Cyclades and the Northeastern Aegean. It was in these regions that characteristic cultural constructs were formed, among them the Cycladic civilisation, one of the most ancient in Europe.