grigoriou monastery mount athos greece

aegean ancient architecture athos awesome beautiful belief buildings castle chalkidiki christian christianity church coast colorful colors cross culture destination eastern eternity foliage fortification fortress god great greece greek grigoriou heritage historic holy impressive inspiration landmark magnificent majestic medieval monasteries monastery monastic monks mount mountain northeastern old orthodox peace peaceful peninsula picturesque pilgrimage religion sacred saint scenic sea serenity shore sight sightseeing spirit spiritual spirituality stonework symbol tradition traditional tranquility travel unesco view vivid woods