The restoration of the Erechtheion is the first restoration programme to have been completed, for which the Committee for the Conservation of the Acropolis Monuments was responsible. The intervention, the purpose of which was to correct the errors of the earlier restorations, was carried out between 1979 and 1987, by the late A. Papanikolaou, architect, and the civil engineer K. Zambas.
The work began with the transferal of the Caryatids to the Acropolis Museum, in order to protect them from atmospheric pollution. Following this, extensive parts of the monument were dismantled and, more specifically, the areas that had been restored in the past (north and south walls to the level of the orthostates, west wall to the level of the base of the engaged columns, ceilings of the north and south porches). A total of 720 members were dismantled. Removal of the rusted clamps and dowels was followed by structural restoration, using titanium instead of iron.
In the new reassembling of the monument, the members that had been set in the wrong positions were reset as they were in antiquity. As a result of this resetting of architectural members, there were gaps in the masonry of the monument's walls, which have been filled in by members made entirely of new marble.
For reasons of static efficiency and morphological integrity of the main, east façade of the monument, copies in artificial stone were set in place of the north column and overlying entablature, which Lord Elgin had removed from the northeast corner of the monument. The six Caryatids that have been placed in the south porch of the monument are also copies in artificial stone.
The intervention is the first restoration of a monument to have been completed by the Committee for the Conservation of the Acropolis Monuments. It has been viewed favourably by the international scholarly community and has been widely acknowledged by the numerous visitors to the Acropolis.