Close to the center, Monastery of Saint Nectarios is one spot to consider adding to your to-do list. The Archaeological Museum of Aegina and the Christos Kapralos Museum are also close by and worth a pit stop.
The best part about having your own car is that you can go anywhere, anytime. Make full use of your newfound freedom by checking out all that there is to do in Poros. After all, it's just 17 miles away. Among your first few stops here ought to be Poros Town Clock Tower, the Poros Shell Museum and Russian Bay Ruins. Locals may also point you towards Hydra, 25 miles away. If you only have time for one thing here, make sure it's Hydra Town Harbour. (But we're also big fans of Historic House of Lazaros Kountouriotis and the Ecclesiastic and Byzantine Museum.)