Lesbos (Greek: Lesvos (Λέσβος)), is a Greek island located in the northeastern Aegean Sea. Lesbos is part of the Lesbos Prefecture, the third largest Greek island and the eighth largest in the Mediterranean Sea. It has an area of 1,630 km² (630 square miles) with 320 kilometres (almost 200 miles) of coastline. Its population is approximately 90,000, a third of which lives in its capital, Mytilene, in the southeastern part of the island. The remaining population is distributed in small towns and villages. The largest towns are Kalloni, Gera Villages, Plomari, Agiasos, Eresos and Molyvos, the ancient Mythymna. Mytilene was founded in the 11th century BC by the family Penthilidae, who arrived from Thessaly, and ruled until the popular revolt (590–580 BC) led by Pittacus of Mytilene.