At the northern foot of Mount Olympus, Dion joined royal ceremony, sanctuary and city. Macedonian kings gathered here to honour Zeus, celebrate festivals and display power before campaigns. The settlement later developed monumental Greek and Roman streets, baths, theatres, houses and places of worship, all shaped by the springs and wetlands of the plain.
Written sources identify Dion in antiquity, but systematic archaeology made its scale visible. Excavation began in 1928 and entered a sustained phase under the Aristotle University of Thessaloniki from 1973. Waterlogged ground created conservation problems while also preserving aspects of the environment. The modern park covers roughly 750 stremmas, so the experience is a landscape walk rather than one compact ruin.
