Sainte-Marguerite Island:
Enjoy nature walks, following the marked trails for a botanical and historical tour; visit the Maritime Museum in the Fort Royal, where you can see the cell of the Man in the Iron Mask.

Saint Honorat Island:

Source:TouristOffice

With its abundance of Eucalyptus, Cypress, and Pine trees, this oasis of nature and silent reflection is owned by the monastery of the Lérins Abbey. Visit the Abbey’s church and stroll past the island vineyards; there is a restaurant and boutique on the island. (Departure from the Port of Cannes / Quai Laubeuf)

ST. TROPEZ ISLANDS:

There are three exotic islands near St. Tropez: Porquerolles, Port Cros, and Levant – just a 30-minute ferry ride away. There are sandy beaches and walks along the natural coastlines to enjoy while there — a tropical paradise experience!
                                                                      Which island would you want to visit?

Wikipedia photo

Source: Tourist Office