Antignano lies to the south of Livorno and has ancient origins, its name appearing in documents dating from 1171. The village is probably even older, and for many centuries was isolated from Livorno, finally getting a road connection in the 19th century.
To defend the village from pirate attacks, Grand Duke Cosimo I had the Castello built (1567), inside which stands one of Livorno’s oldest churches, Santa Lucia (1370). Much later, the fortification was turned into a hotel, reflecting Antignano's popularity as a seaside resort from the 19th century, and many villas grew up along the seafront, most of which still stand today.
The area is now one of Livorno's most sought after residential districts and the Bagni Roma and some small pebbly beaches make it popular with bathers in the summer. It is home to a couple of seafront hotels, the Rex and the Universal, and the CTL Tennis club.