aerial view of the famous agios dimitrios (saint demetrios) beach in alonnisos island sporades greece

aegean alonisos alonissos alonnisos amazing attraction bay beach beautiful beauty blue boat coastal colors crystal clear water destination discover europe exotic explore greece greek holidays island lagoon landscape mediterranean natural nature ocean panorama paradise pebbled relaxing rocky scenery sea seaside sporades summer summertime tourism tourist touristic tranquil travel turquoise unique vacation peristera aerial view famous agios dimitrios saint demetrios island sporades top greece