Acropolis of ancient Posidei (Pigadia):
It was probably built on rocky ground. Minoan and Mycenaean carved tombs were found in the port of Pigadia. Perhaps it was also an acropolis during Mycenaean times.
Sanctuary of Demeter (Pigadia, Istia):
Ruins of an outdoor sanctuary, perhaps of the goddess Demeter.
Burial monument (Pigadia, Myli):
Monumental carved tomb
Kastellos (on the southernmost cape of the island):
The name means fortress, but no fortress ruins have been preserved.
Koraki (between Aperio - Volada):
Medieval castle of the Kornari era.
Vrukunda (Olympus, north of the Avlona area - 6th century BC):
One of the four ancient cities of the island. Part of its walls and burial chambers, dug into the rocks, from the Hellenistic era are preserved.
Saros (Palation bay of the island of Saria):
Scattered Neolithic and Bronze Age sherds. Ancient carved tomb, early Christian and medieval buildings. The strange vaulted buildings may have belonged to an Arab settlement or Saracen pirate stronghold before the 10th century.
Ancient Acropolis (Arkasa):
The ruins of the ancient city with cyclopean walls are located on a rocky peninsula in the center of the settlement.
Minoan finds (Diafani, Kambi Bay):
The area seems to have been inhabited since the Minoan era.
Ancient altar (Arkasa, in the church of Agia Sopsia):
Turned upside down, with bucrania working female winged figures, it was used as a swimming pool.
Abandoned settlement on a plateau at the top of the mountain on the islet of Saria.
Sokatro Island (Lefkos):
Ruins of a medieval settlement with vaulted buildings, possibly tanks and fortifications.