The Roman aqueduct of Minturno (1st century A.D.), with a length of about 11 km from its source at Capodacqua (Spigno Saturnia) reached the Roman city of Minturnae through the Porta Gemina.

The old town of Minturno, the ancient 'Traetto', was built on a hill relief, near the Garigliano river, immediately after the destruction of the Roman city of Minturnae in the late 6th century. The village, dominated by the Baronial Palace, has a characteristic medieval layout.

The medieval village of Maranola stands in the municipality of Formia on a hill 269 m above sea level on the slopes of the Aurunci Mountains, with an extraordinary view over the Gulf of Gaeta.

The archaeological site of Caposele, dating back to the late Republican age (1st century BC) is part of a larger residential complex, named after the nearby villa of the princes of Caposele, which later passed to the Rubino family.

The Gianola harbour (improperly called 'Roman') was made in 1930 by Marquis Carlo Afan De Rivera on structures dating back to Roman times that were used for fish breeding and attributed to the property of the Formian knight Mamurra, a very rich friend of Caius Julius Caesar.

In the Archaeological Area of the Roman city of Minturnae, an original section of the Appian Way, the remains of the Republican and Imperial Forum, the Capitolium, the Macellum (market), the Tabernae and the Bath complex are visible. In the spaces under the Roman Theatre is the Antiquarium where statues, sculptures, epigraphs and coins are exhibited.

It is the first suspended bridge on iron catenaries in continental Europe, built between 1828 and 1832. It was designed by the engineer Luigi Giura to provide a direct crossing of the river and allow a connection to the site of the Roman city of Minturnae, where the Bourbons had begun archaeological investigations in the late 18th century. The bridge was a silent witness to the unification of Italy under the first Savoy domain, then to the hard battles along the Gustav Line at the end of the Second World War with its destruction on 14 October 1943. It was restored in 1998 with a project resulting from a strong popular impulse.