|Summary:||Circular building; on the west side of the Agora, south of the Bouleuterion.|
|Date:||ca. 465 BC|
External diameter: 18.32 m; wall: 0.71 m thick.
Circular building. Six interior columns for additional support of the roof. On the north side was a small annex that served as a kitchen.
Often called the Skias (a type of sun hat) because of its conical roof. The Tholos served as a state dining room for the Prytaneis of the Boule (Council), and is located on the ruins of the earlier Prytanikon.