Hence the frequent confusion with the Tholos which was near the council chamber and was the residence of the Prytaneis (see below) of the council.
North of the Tholos is the long portico described in inscriptions as the Abaton; it is on two different levels, and the lower or western portion of it had two storeys, of which the upper one was on a level with the ground in the eastern portion.
The Tholos at Epidaurus, built by Polycleitus (c. 400 B.C.), and the Tholos at Olympia, known as the Philippeion, are the most remarkable examples, and in both cases were covered with a sloping roof and not with a dome.
Curtius places the original Prytaneum south of the Acropolis in the Old Agora, speaks of a second identical with the Tholos in the Cerameicus, and regards that of Pausanius as a building of Roman times (Stadtgeschichte, p. 302).
Wachsmuth holds the former view and regards the Tholos as merely a dining-room for the Prytaneis in the old democratic period.
The Tholos lay to the south-west of the temple of Asclepius; it must, when perfect, have been one of the most beautiful buildings in Greece; the exquisite carving of its mouldings is only equalled by that of the Erechtheum at Athens.