The fortification is a very popular tourist destination today with its well-preserved old quarter (the medieval village) with narrow streets and small squares.
Forte Sangallo[1] was built in 1501 by Pope Alexander VI and his son Cesare Borgia.
The project is attributed to the Renaissance architect Antonio da Sangallo the Elder, a true specialist in war fortifications.
In the fort, the Municipality of Nettuno set up conferences and contemporary art exhibitions.
Forte Sangallo also houses the "Museo dello Sbrarco Alleato" (Allied Landing Museum) of the Battle of Anzio.