Sangallo Castle

From the 12th century Nettuno became feud of the Tuscolani popes and consequently of the Orsini and Colonna families, and then, under Alex VI, property of the Borgias. 

After being instructed by Pope Alex to build a fortification to defend the coast against the frequent attacks by the Saracene pirates, Antonio da Sangallo erected the Sangallo Fort according the plans of his brother Giuliano. 

By 1594 Nettuno changed its feudal lords twice: After the Borgia era it fell into the hands of Carafa, only to become finally Colonna-property again.

It is considered one of the most appreciate military construction of renaissance age. It was acquired by Nettuno Council in 1997 and it represents the artistic and cultural heart of the town.