The open-air archaeological site of Dion spreads across a broad flat plain at the base of Mount Olympus, covering the remains of a city that was occupied from at least the 5th century BC through the early Byzantine period. The walk through the excavations takes you through successive layers of history: Macedonian sanctuaries, Hellenistic streets, Roman civic buildings, and early Christian basilicas.
The site is well signposted and the paths are manageable. Plan on two to three hours if you want to see everything properly. The flat terrain makes it accessible, and the setting — with Olympus rising dramatically above and the plain stretching toward the sea — is spectacular on a clear day.
The main entrance is off the main road at the edge of the modern village. A combined ticket covers both the site and the museum.