Low angle shot of the pillars of monument of Agrippa and Propylaia in Acropolis, Athens, Greece on a cloudy day

tourists tourists walking walk pillars greece travel marble architecture blue sky day skyline cityscape tourism mediterranean unesco temple culture greek world heritage site athens acropolis sightseeing ancient columns outdoor monument landmark ancient greek temple historical ancient ruins attraction destination monument of agrippa propylaia cloudy day historic culture historic tourist destination overview brown historic pillars outdoors low anlge shot low angle historic structure pillar dark clouds stone pillars stone structure