Criterion (i): The monasteries at Daphni, Hosios Loukas and Nea Moni of Chios represent, with their admirable mosaics on a gold background, unique artistic achievements. The monastery complex of Hosios Loukas and particularly its namesake Katholikon (main church), preserves its initial 11th-century form intact. The principal risks to the three monasteries are natural disasters such as forest fire (Nea Moni) and earthquake (Daphni and Nea Moni). The Katholikon (main church) of Nea Moni has preserved its authentic mosaic decoration and the marble revetment of the lower parts, even its initial pavement. Interventions or damages to the Katholikon (main church) of Hosios Loukas over the centuries were minimal.