Elba and the other islands ( Gorgona , Capraia , Pianosa , Montecristo , Giglio and Giannutri ) of the Tuscan Archipelago are protected in the National Park of the Tuscan Archipelago . The largest island of the Tuscan Archipelago , Elba is also part of the National Park of the Tuscan Archipelago and the third largest island in Italy after Sicily and Sardinia .