You might want to get your camera out and head to Fort Boyard— just one of the landmarks located 2.1 mi (3.4 km) from central Ile-d'Aix. Why not take a stroll along the port and watch the sunset while you're here?
Why not spend a lazy afternoon at Plage des Les Sables Vignier during your trip to Saint-Georges-d'Oleron? Make some time to visit the monuments while you're in the area.