|Summary:||Irregularly shaped building; on the west side of the Agora, formed an architectural unit with the Old Bouleuterion.|
|Date:||ca. 550 BC - 525 BC|
ca. 27 m east-west by ca. 18.5 m north-south.
Many internal irregularly shaped divisions, grouped around a colonnaded court. Two cooking pits on the north side.
Also known as Building F, Camp postulates that it may have been a palace for the Peisistratids. Because the later Tholos was located on the same spot as the Prytanikon and included the same area in its enclosure, it has also been suggested that this structure served as a state dining hall.