Greece, Attica, Athens, Hadrian's Library.

travel tourism holiday vacation sightseeing tourist attraction destination travels athens athina greece greek hellas europe european union eu hadrian's hadrians hadrian library libraries of building buildings architecture architectural historic historical history heritage carved carving carvings stone stonemasonry stonework masonry monument monuments classical old ancient corinthian columns pillars column pillar ruin ruins ruined archaeology archeology archaeological archeological site pentelic marble propylaea propylaia propylon propylaeum steps blue sky culture cultural hellenic outdoors outdoor outside vertical atenas athenes cultures destinations ellada southern