Acrocorinth is a limestone mass rising almost 575 metres above the plain of Corinth — one of the great natural fortresses of the ancient world, visible for miles in every direction. Its summit and slopes held multiple sanctuaries alongside its military fortifications. The most celebrated was the Temple of Aphrodite at the very top. Below it, on the terraced northern slope, lay the Sanctuary of Demeter and Kore. Demeter was the goddess of grain and the harvest; Kore — her daughter, also called Persephone — was the goddess who descended into the underworld each winter and returned each spring, her return celebrated as the resurrection of the agricultural year. To worship them on this high place, overlooking the coastal plain and the two seas, was to hold the fertility of the land in view while addressing its divine sources.

The sanctuary's history stretches across the archaic, classical, Hellenistic, and Roman periods. It began as a sacred area in the archaic period, gained a small temple, and then a more elaborate structure in the 4th century BC. When the Roman general Lucius Mummius razed ancient Corinth in 146 BC, the sanctuary fell into ruin along with everything else. Julius Caesar refounded Corinth as a Roman colony in 44 BC, and the sanctuary was reestablished. In the 1st century AD, three small Ionic temples were added. The geographer Pausanias, writing in the 2nd century AD, noted the sanctuary's temples and remarked that the images of the goddesses were 'not exposed to view' — kept hidden from ordinary sight in the manner of mystery cult sanctuaries. He also recorded the myth of Plemnaeus, a legendary king of Sicyon whose children all died at their first cry, until Demeter herself came in disguise to raise his son Orthopolis.

The sanctuary was active through the Roman period and into late antiquity. Then, during the intensifying persecution of traditional religion in the 4th century AD — accelerated under emperors Constantius II and Theodosius I — something happened in the precinct. The archaeological evidence tells the story without emotion: a Roman well, three decapitated stone heads, and a coin assemblage dating the incident to the mid-to-late 4th century. The large head belonged to the cult statue of Demeter. The two smaller heads were portraits of priestesses. They had served the goddess through the centuries of the sanctuary's existence. Their final recorded location was the bottom of a well, after the faces had been broken off. Temple and shrine attacks occurred across the Roman Empire during this period; what happened at Acrocorinth was part of a larger pattern.

Archaeological work at the sanctuary has produced significant finds beyond the decapitated cult images. Votive deposits accumulated over the long centuries of the sanctuary's use — small terracotta figurines, pottery, lamps, and other offerings left by worshippers. The terraced architecture of the sanctuary itself has been mapped: the successive building phases, the small Ionic temples of the Roman period, the enclosure walls that defined the sacred space on the steep slope. The finds illuminate a sanctuary that served both an intimate religious function — the grain goddesses were approached with personal requests for fertility, for the health of children, for a good harvest — and a civic one, as part of the religious landscape of one of the ancient world's most important cities.

Standing on the northern slope of Acrocorinth, with the plain of Corinth and the Gulf spreading below, it is possible to understand why people climbed here to worship the goddesses of grain and return. The land they were asking to be fruitful lay visible before them. The sea by which its surplus would travel lay beyond. The sanctuary occupied a position between the earthly and the elevated — not quite at the summit with Aphrodite, but high enough to look down on the world of farming and commerce that the goddesses were credited with sustaining. After the 4th century, the terraces fell silent. The heads stayed in the well. The citadel above became in turn Byzantine, Frankish, Venetian, Ottoman — the sanctuary's memory compressed into layers of stone and time.