pandroseion and the erechtheum with the sacred olive tree on the acropolis of athens, greece

pandroseion sanctuary pandrosus green tree olive foliage botanic erechtheion erechtheum ancient greek temple old historic column porch maidens caryatid statue sculpture acropolis athens greece europe architecture structure ruins remains worship preserved monument archaeology unesco world heritage site impressive stunning beautiful incredible famous travel tourism daytime holiday vacation leisure visit outdoors stone sky