A god who heals
Asclepius was a Greek god, or in some traditions a hero raised to divine status, associated with healing. In myth he was a son of Apollo and was taught medicine by the centaur Chiron. His symbol was a staff with a single snake coiled around it, and his cult grew steadily in the Greek world from about the fifth century BCE. Sanctuaries dedicated to him, called Asclepieia, existed in many places, and the major ones attracted visitors from far away.
This article concerns the practice of visiting these sites. It is not about the physicians of the Hippocratic tradition, though the two forms of healing coexisted, and many people probably used both.
The great sanctuaries
Epidaurus, in the northeast Peloponnese, was among the most famous Asclepian sanctuaries and is the one most often used to describe the cult. Others included Kos, Pergamon in Asia Minor, and Athens, where a sanctuary stood on the south slope of the Acropolis. Epidaurus is also known for its large theatre, a famous example of Greek theater architecture, which suggests the site was also a festival and civic centre and not only a place for the sick. Pergamon, better known for its Pergamon library, also had a sanctuary that developed in the Roman period into a large complex drawing visitors for generations.
Many of these sites stood outside city centres and often near springs or in healthy-seeming locations. Buildings could include temples, altars, dining rooms, baths, a sleeping hall and sometimes a theatre or a stadium. The precise layout varied from site to site.
What a visit involved
The sequence we can reconstruct comes from inscriptions, descriptions by ancient authors and the remains of buildings, so some details are uncertain and may have differed between places and periods. In general terms, a visitor would:
- travel to the sanctuary, sometimes after a long journey;
- undergo purification, which could involve bathing and abstaining from certain foods;
- make a sacrifice or offering to the god, with the cost depending on what the visitor could afford;
- spend the night in a designated sleeping area in the hope of a dream or a vision of the god.
This overnight stay is called incubation. The word comes from Latin, but the practice is Greek in origin.
Dream healing
Unlike a consultation at one of the Greek oracle sites, where a priest or priestess gave a spoken answer, incubation relied on the visitor’s own dream.
The central idea was that Asclepius might appear in a dream. He could heal the sleeper directly, or he could give instructions that the person would follow after waking. Priests of the sanctuary were probably involved in interpreting dreams and recommending treatment, though how much influence they had is a matter of discussion among scholars.
The recorded dreams sometimes involve the god touching the affected part of the body, or a snake or dog licking a wound. Other accounts record advice about diet, exercise, bathing or medicines, which resembles what a physician might also prescribe. This overlap is one reason scholars question the old picture of “religious” and “rational” medicine as opposites.
The evidence of inscriptions
At Epidaurus, stone slabs, often called the Epidaurian miracle inscriptions, list individual cures. They date to around the fourth century BCE, and they describe patients with conditions such as paralysis, blindness, wounds or the presence of a foreign object in the body. The stories are written in praise of the god and include some marvellous elements, so they are not neutral medical records. They may reflect what the sanctuary wished visitors to remember. Their selection also means failures are largely invisible.
Many visitors also left votive offerings, often models of the body part that had been healed, made in terracotta or stone. These dedications are found widely in the Greek and Roman world, and they hint at the kinds of complaints people hoped to have cured: eyes, ears, limbs, breasts and others.
Physicians and the god
Asclepian healing and Greek physicians were not strict rivals. Physicians sometimes worked near sanctuaries, and some medical writers accepted that the gods might help. Others, such as the authors of certain Hippocratic texts, argued firmly that diseases had natural causes, and the wider world of Greco-Roman medicine contained both attitudes. In practice, a sick person facing a chronic or frightening illness might want every available option. A modern comparison would be unfair, but it is reasonable to say that the sanctuary offered hope, community, ritual and sometimes sensible advice about regimen, at a time when physicians could do little for many conditions.
Spread to Rome and later periods
According to Roman tradition, a plague led the Romans to bring the god from Epidaurus to Rome in the early third century BCE, and a temple was set up on the Tiber Island. Asclepius was known in Latin as Aesculapius. The cult remained active under the Empire. Pergamon’s sanctuary was notable in the second century CE, when the orator Aelius Aristides left written accounts of his own long illness and his dreams of the god, one of the few detailed personal records of such experiences.
The cult declined over time as Christianity became dominant in the late Roman world, though the exact pace varied by region. Sites like Epidaurus and Kos are now archaeological places visited by tourists and researchers, and much of what is known about the cult comes from their excavation.
Why it matters for the history of medicine
The healing temples show that ancient ideas about health were bound up with belief, community and ritual. Some visitors may have recovered because their condition improved naturally, others because the experience was reassuring, and some did not recover at all. We cannot judge individual outcomes. What the evidence does show is that, for centuries, the sanctuary was a normal part of Greco-Roman everyday life and of how many people responded to illness.