You can learn about the history of Ermoupoli with a stop at Ermoupolis Town Square. Wander the beaches and waterfront in the area.
Why not spend a lazy afternoon at Kini Beach during your trip to Kini? Amble around the area's beaches or visit its cathedral.
Though Geniko Nosokomio Sirou "Vardakio kai Proio" might be what brings you to town, perhaps you'll have a chance to explore more of Ermoupoli while you are here.