Phidias' workshop was located at the outer side of the Altis, west of the temple of Zeus, southwest of Theikoleon and north of Leonidaion. The workshop was an oblong, rectangular building with two inner colonnades, dating from 440-430 BC, the period during which the sculptor had undertaken the construction of the chryselephantine statue of Zeus. In the 2nd century AD, Pausanias reports that the building served as a cult place for the gods. As there are no tools nor traces of materials found during the excavations, it appears that at some point the workshop was cleaned and remodeled.
Outside of the west enclosure of the sacred area of the Altis, a paleochristian basilica was built on the site of the workshop of Phidias, constructed in the Classical period. Its walls are preserved in notable height.