The archaeological studies, conducted by the Centro Scavi di Torino (formerly called Centro Scavi dell’ISMEO e di Torino) from 1960 to 1961, concerned the Kuh-i Khwaja complex in Iran’s Seistan region.
The study, which combined stratigraphic excavations and the analytical study of building techniques, showed how the site, in its construction stages between the Achemenid and Sasanian periods, is the clarifying element of the architecture of western Iran, a region of cultural upheaval and a meeting point of the Greek element and Iranism, the Hellenistic/Eastern koinè that characterized the period between the 4th and 7th centuries A.D.