Akko’s Knights Hall, also known as the Citadel of Akko, is located in the northwestern section of the Old City. Its history stretches back to the Hellenist Period, 2,300 years ago. In each era, with each new conquering nation, the citadel served a different purpose. Most of the ruins that visitors see here today are from the Crusader period, approximately 900 years ago. Old city map.