Asinara Island was closed to the public for over a century before becoming Asinara National Park (Parco Nazionale dell'Asinara). This uninhabited island, whose remote location was perfect for isolating prisoners, housed a prison camp during World War I and Italy’s maximum security prison beginning in the 1970s. Decades of limited human impact resulted in the preservation of the island’s pristine Mediterranean landscape, which today you can enjoy in the park. Asinara is home to several animal species, including the Sardinian albino donkey, mouflon sheep, wild boar, and a variety of birds. In addition, you can see the remains of a medieval monastery and the Castellaccio fortress.
Asinara National Park is visitable only with an authorized guide as part of a day tour. Most tours include a boat ride from Stintino (on the main island) around Asinara and a stop to explore the park by land—either by joining an off-road vehicle or bus tour or a guided hike or bike along the trails—before heading back to Stintino. Many day trips include stops in the tiny coves of Fornelli, Cala Reale, and Cala d'Oliva for swims.