You wouldn't know it by what you've heard of Tuscany (misty hills dappled with vineyards and olive trees), but there is actually an archipelago of seven islands off of its coast. Preserved by national park status, these natural habitats that span the sea between the mainland and Corsica are ripe with adventure waiting to happen, whether you prefer land-based hiking and biking activities or water-based diving and wave riding.
A popular summer destination for both domestic and international travelers, most will find themselves on the largest island, Elba, via boat or ferry. This is your quickest way to navigate to the smaller islands in the chain, although the coastal town of Piombino also provides service. Elba has the most culture of them all as well, with a few examples of ancient ruins (Villa Romana delle Grotte and Villa Romana di Capo Castello) and an imposing fortress on a seaside cliff (the Medici Fortress in Portoferraio), but these attractions only add to what makes Elba worthwhile. There are somewhere around seventy coves and beaches, from the umbrella-lined and crowded Lido to the numerous sandy spots of isolation that ring the island (for more info, check our links section). Windsurfing boards are available at Lido, while scuba diving locations proliferate at the north end of the island.
All that said, Elba isn't the only island worth seeing. Despite the fact that Montecristo and Gorgona are largely closed off to tourists (the former a research area and the latter a state prison), islands like Capraia and Pianosa pick up the slack. Capraia may be accessed directly from Livorno and, except for its small port, is unpopulated. The beaches and volcanic formations of the island may only be reached on foot due to a lack of roads, making this a true off-the-beaten-path paradise. Rent a boat to circumnavigate the island; there really aren't many sandy expanses of beach to just lie around on and the many grottoes and unique formations are best seen from the water anyway.
Pianosa is uninhabited (except for service staff), so that travelers may find their way there from Elba to seek out the serenity of a million stars in the night sky and swarms of fish who have not yet experienced reason to fear humanity. The landscape is lovely, although you'll find yourself lacking in many amenities that you may be used to and will need park approval prior to setting out.
For more information, consult the included links; we've got you covered.