An archaeological study of the City Eleusinion in Athens, the sanctuary of Eleusinian Demeter and the city terminus for the annual Eleusinian Mysteries. The book presents the stratigraphical evidence from excavations of a part of the sanctuary (conducted in the 1930s and 1959-1960), the remains of the Temple of Triptolemos, a Hellenistic stoa, and a propylon, and contains extensive descriptions of the context pottery, a discussion of the ritual vessel plemochoe, and catalogues of inscriptions, sculpture, and architectural pieces from the sanctuary. There is a survey of the topography of the sanctuary and its environs on the North Slope of the Acropolis, and a discussion of its relationship to Eleusis and its position as a landmark within the city of Athens. Since a significant portion of the sanctuary still lies unexcavated under the modern city, the book includes a detailed assessment of the only evidence known so far for the various phases of use of the sanctuary, from the earliest evidence of the 7th century B.C. to the late antique period.