dolphin fresco of the queen's megaron in the archaeological site of knossos, unesco world heritage on crete island greece

knossos archaeology heraklion queen 039 megaron minos crete island greece mediterranean europe unesco world heritage site historic old ancient greek bronze age minoan civilization religious administrative center dolphin painting mural fresco ruins remains room hall doorway structure architecture building preserved reconstructed column pillar famous attraction stunning outstanding beautiful impressive incredible daytime travel tourism sightseeing holiday vacation leisure visit