The Cyclopean Walls, outside the village of Razata, are ruins of the walls of the ancient city of Kranis (7th and 6th centuries BC). They had a length of about 4km (now about 2km).
Krani was one of the cities of Kefalonia that were part of a kingdom called Ancient Sami that dominated Kelafonia for over three thousand years. They walls were namend Cyclopean because of their size. They are considered very important for the information we can learn from them about the Greek art of fortification during the Mycenaean era.
In the region, ruins of various buildings and a Doric temple dedicated to the goddess Dimitra and her daughter Persephone were found.
The Archaeological Museum of Argostoli has a carved inscription “Triopis Damatri kai Kora” (in other words, Triopida dedicates this to Dimitra and her daughter, Persephone). The name of the woman who made this dedication shows the ancient ties between the island and Messinia, because the father of the mythological heroine, Messinia, was called Triopas.