tour boat cruising in aegean sea mount athos chalkidiki peninsula greece

aegean athos chalkidiki coast destination greece greek holy monasteries monastic mount mountain mountainous nature orthodox peninsula religious scenery tours travel traveling trip woods summer historical christianity europe eastern coastline coastal panorama scenic view secluded solitary country old ancient history religion christian rocky monastery exterior building architecture clifftop sheer cliff solitude seclusion sky halkidiki covered silhouette skyline clouds ridges slope vintage tour boat cruise sailing navigate ship horizon