Gavorrano's wall was built during the 13th century, when control over the centre of the city was divided between the bishops of the new Diocese of Grosseto and the Alberti family of Mangona. During the 14th century, the defensive structure was restored by Siena and reinforced with several watchtowers. Unfortunately much of their hard work went to waste, as the wall and its towers were neglected as soon as the Sienese left Gavorrano. It was only in the second half of the last century that the city began renovating the wall to restore it to its previous splendour. A few of the original 13th-14th century towers still remain. Visitors can enter Gavorrano through one of the original arched doorways, the Porta di Sotto, which is quite nostalgic I have to say!