The archipelago contains the islands of Elba ( the largest island of the group ) , Pianosa , Capraia , Montecristo , Giglio , Gorgona and Giannutri , all of which are protected as part of the Tuscan Archipelago National Park . The archipelago contains the islands of Gorgona , Capraia , Elba ( the largest island of the group ) , Pianosa , Montecristo , Giglio , and Giannutri ; all of which are protected as part of the Tuscan Archipelago National Park .