|Summary:||Oblong hall; between the western rock-cut steps of the Parthenon and the shrine of Artemis Brauronia.|
|Date:||ca. 450 BC|
ca. 43 m x ca. 14.2 m; Inner intercolumniation: ca. 5.70 m; later colonnade: ca. 4.5 m deep.
Oblong hall opened north. Interior colonnade of 6 columns created 2 aisles. Possibly 3 double doors in the north wall, opening on to a later exterior Doric colonnade which cut into the western steps approaching the Parthenon. The area west of the steps and north of the Chalkotheke is known as the West Forecourt of the Parthenon.
First phase of construction is dated to ca. 450 B.C. Later colonnade added in the early 4th century B.C. An inscription dated to ca. 353/52 B.C. lists items, such as armor and bronze vessels that were stored in the Chalkotheke.