Kliou, or Kleo, is located in the northern part the island of Lesbos (Lesvos), 43.4 km to the north of the town of Mytilene, on the road from Mandamados to Molyvos (Mythimna). The name of the village derives from Muse Clio. It is a small village, surrounded by olive groves, that’s why there are several rather big olive-presses in the area. The main attraction in the village is the church of Agia Triada, which has a fine 18th-century iconostasis, carved in wood.

Three kilometres to the northeast of the village, on the top of a cliff, there are ruins of the Byzantine fortress of Agii Theodori. The place is called Paliokastro, which in Greek means “old fortress”. Inside the fortress the remains of a small settlement, including houses, a church, a well, etc., still can be seen. To the west of the fortress an early Christian basilica, dedicated to Agia Anastasia, survives in ruins.

The nearest beach to Kleo is the Beach of Tsonia. It is a nice beach with crystal waters and reddish sand.