Delphi, together with Olympia, has been well-known as a classical sanctuary, especially as a place of oracle. The authors surveyed the Treasury of Massilians (ca.540-500 BC) at the sanctuary of Athena Pronaia in Delphi during the summer in 1994. The field research was carried out to get numerical and visual information from the viewpoint of construction and planning. The survey could make contribution for new observation of the monument in the viewpoint of building technique, and the result is reported as follows.
