A sculpture fragment from the Stoa of Attalos, in the Agora of Athens. The Stoa of Attalos was reconstructed in the 1950s and now features a number of sculptures and a small museum.

http://www.agathe.gr/overview/the_archaeological_site.html

https://en.wikipedia.org/wiki/Ancient_Agora_of_Athens

https://en.wikipedia.org/wiki/Stoa_of_Attalos