the holy mountain athos in greek hagion oros has been listed as a world heritage site. greek monastery of esphigmenou esfigmen

10th aegean architecture athos beautiful brotherhood building castle cell century church city coast east esfigmen esfigmenou esphigmenou europe european famous greece greek heritage hill historic historical history holy icon landmark landscape medieval monastery monastic monks mount mountain old orthodox peninsula religion room saint sea sky state tourism travel unesco view world