The ruins of the ancient settlement of Korsies are located just outside Chostia (in the direction towards Sarandi settlement).

In the ancient settlement of Korsies, the surviving monuments and fortifications belong to the Archaic, Classical & Hellenistic periods (6th to 1st century BC). Among them, stand out the ruins of the Temple of Hera. One of the most important parts of the archaeological site is the so-called craft area. Various findings suggest that it was a spinning mill.