The sacred fire of Vesta was an eternal flame in ancient Rome dedicated to the goddess Vesta, protector of the hearth, home, and family. It was tended by the Vestal Virgins, a unique priesthood that began with two members, later increased to four, and eventually to six. Chosen by lot from patrician families, the Vestals served for thirty years, during which they ensured the flame never went out and performed rituals linked to domestic life. These included the ceremonial sweeping of the temple on June 15 and the preparation of sacred food for major festivals. As Vesta embodied the hearth, the flame symbolised both the life of every Roman household and the vitality of the state. Its eternal burning was believed to guarantee the goddess’s protection and the enduring strength of Rome itself.
The fire was renewed every year on the Kalends of March. Plutarch's (c. 1st century AD) Parallel Lives records the Vestal Virgins’ use of burning mirrors to relight the fire:
