A big, almost square building on the south side of the agora of Sikyon,
presumed to have served as the meeting place for the Voule (Parliament).
It dates back to the
Its erection is related to the re-establishment of the city on a diferent location by Demetrius Poliorketes, one of the successors of Alexander the Great.
The Bouleuterion consisted of a single, almost square auditorium, with two internal concentic ionian colonnades. Inside were round benches and two rectangular basins, into which water was channeled through pipes from a spring at the foot of the Acropolis. The main entrance was on the north side, across the Agora, and was decorated with a portico.
The building is mentioned by Pausanias (2nd century BC). In the roman period it was used for public baths.