|Summary:||Almost rectangular building; just off the southwest corner of the Agora.|
|Date:||ca. 450 BC|
ca. 40 m x 17 m.
A long hall that led back to a courtyard. Five almost square rooms off the west side of the hall and 3 off the east side. At the northeast corner near the entrance, was a group of 4 rooms, possibly with a 2nd story.
The location of the building near the law courts, its plan of separate cells with an easily guarded single entrance, and its provisions for bathing provide all the necessities for an ancient prison. The excavation of a small statue of Socrates and a quantity of medicine bottles, likely vessels for the poisons used to execute prisoners, have led to the identification of this building as the State Prison, where Socrates was executed in 399 B.C.