Halos, Delphi

The Halos was a circular open-air sanctuary situated in the northeastern section of the Sanctuary of Apollo at Delphi [1]. Dating to the 4th century BC, this megalithic structure functioned as a ritual space where ancient Greek religious ceremonies were conducted [1]. Its round, exposed design contrasts with the enclosed temple architecture, suggesting it was used for communal rites and processions [1]. The structure lies between the Bouleuterion and Sibyl's Rock, near the path leading to the Roman-era fountain [1].