The objectives of the program are: to investigate the relationship between the Sanctuary to Poseidon and the ancient city of Kalaureia; to study the interaction between the sanctuary and the city and their role in the Saronic Gulf and the wider world; to elicit from the archaeological record what rituals were practiced in the sanctuary and what they say about the gods sacrificed to; to study the role of the sanctuary to the present-day people on Poros and in the wider area and how they perceive of the archaeological fieldwork carried out today.