Stoa of Attalos It was built 150 BC by King Attalos II of Pergamon; Made the Stoa to pay homage to Athens; and would have housed the philosophers then. Today it is a museum; In 1928; millionaire John D. Rockefeller donated $250;000 to finance the excavation of the site. it was finished about 1953- 1956. interesting is the portico with the colunms a 115 meters long. The stoa faced onto the Agora; the civic heart of ancient Athens; The agora was more than a marketplace. People came to the agora to discuss politics; meet with friends; as well as buy items from the market. here is a look at the stoa Attalou today where still the people come.