Spargi is perhaps the most beautiful of the smaller islands of the Maddalena archipelago. Its highest point is Colle Guardia Preposti (155 m) and its overall aspect is decidedly harsh, mountainous and wild. The coasts are generally high and rocky, with beautiful granite formations reflecting in the calm waters of the main inlets. The numerous coves, particularly spectacular owing to the transparence of the sea-beds and by the impending mass of granite bluffs, are covered with a thick vegetation and enriched with charming beaches of very fine sand washed by a sea with indescribable colours. The most beautiful beaches are along the southern coast (Cala Corsara) and the eastern one (Cala Soraia, Cala Granara, Cala Conneri). The western coast, which is rather uneven, is made up of bluffs and granite clusters, eroded into the strangest shapes by the atmospheric agents.
The island of Spargi, as all the others of the archipelago, is the destination of a great number of visitors coming from Palau, Santa Teresa and La Maddalena during the summer season. It is the third island in size but also the most isolated one along with the small islands of Spargiotto and Spargiottello and the numerous sharp rocks that rise out of the seabed. The wonderful Gala Corsara, Cala d'Alga, Cala Caniccio and Cala Granara have borne the fame won by the island of Spargi after a Roman ship was found in Cala Corsara. The remains of the ship are now visible at the Museum N. Labroglia of La Maddalena.
The island is divided into "tanche", which are rectangular portions of land surrounded with stones, used to breed wild livestock. Spargi has no tourist facilities and is seasonally inhabited by shepherds. The highest and most panoramic point is Monte Guardia Preposti (155 metres).