The author presents the history of the places where patients with epidemic pathologies were isolated. Since the study of medicine began, such places have been known as asclepiei, xenodochi, hospices, lazarettos, sanitary cordons, and quarantine stations and they contributed to controlling epidemics in Europe. Important not only in the context in which they were created, these structures expressed the medical culture and point of view of that age. Although very far from discovering the cause of the pathology due to their lack of scientific knowledge, the medical class sometimes knew how to effectively organize the isolation of patients. The history of such structures interweaves with the long history of Christianity and with the emerging nations of Europe and the city-states of the Italian Renaissance. Previously, in classical Greece and Imperial Rome there had also been "homes for the sick" to isolate patients. Today the world is periodically hit by epidemics. In such moments the medical profession uses its research ability and organizational capabilities but also historical memory to reduce epidemic contagion.