|Summary:||Walled open air sanctuary; north and slightly east of the Parthenon on the Acropolis.|
|Date:||ca. 500 BC|
Trapezoidal walled area with pediment over main entrance at the southwest corner and possible other entrances midway in the east and north walls.
Within this precinct were held the rites of the Bouphonia, an annual sacrifice of oxen to Zeus Polieus. A small temple or a barn was associated with the sanctuary and lay just east of it. The boundaries of this sanctuary are reconstructed from rock cuttings remaining in the Acropolis bedrock, the 1st of these cuttings being dated "pre-Periclean" by G.P. Stevens.