Susa

Susa or Sousa is a major city in the Seleukid Empire, and administrative center of the province of Susiania. During the reign of Seleukos I Nikator it was renowed for its beautiful streets and well kept gardens. The city, as a Seleukid stronghold following Seleukos' reign, was the final stop of Antiochos inaugural Anabasis.

Model Macedonian city
During the reign of Seleukos I Nikator the city was greatly expanded in an effort to turn it into a centre of Macedonian culture in the empire. Many great public works were completed in this period, including the temple of Zeus and the great theater. The city was also well endowned with libraries to spread Macedonian culture. This program succeeded in attracted thousands of Macedonian veterans to settle in the city, which formed a craddle of the future Seleukid army and leadership.

Aside from the cultural investements, Seleukos invested heavily in the economic well being of the city, opening up a new market which succeeded in drawing in new traders.