In the heart of the modern city, between the church of Agios Nikolaos and the central square, lie the excavated remains of a sanctuary dedicated to Asclepius — an Asklepieion. These are among the oldest known remains of an Asclepian healing sanctuary in Greece, predating even the famous Epidaurus complex. The ruins include traces of stoas, cult buildings, and mosaic floors from the Roman period that sits atop the earlier Greek sanctuary.
The site is small and may be fenced off at times, but even a glance at the excavated layers connects you to something genuinely ancient: this was a place where the sick came to sleep and dream, hoping the god would appear and prescribe a cure. A short walk brings you to the remains of Roman baths and a stoa that formed part of the ancient city's public centre.