The village of Nettuno is the oldest part of the Tyrrhenian city. It is located on Lungomare Matteotti, right by the sea, near Camping Villaggio Isola Verde. Although referred to as medieval, the village has much older origins. It was the port and the oldest part of the Volscian city of Antium, which includes present-day Anzio and Nettuno, and was called Cenone.

The village is currently inhabited. Houses are found in the streets and squares, and especially along the city walls and in the towers. It is frequented by citizens because of the presence of the Church of St. John and the numerous businesses. On evenings, especially summer evenings, the streets of the village fill with people due to the massive presence of clubs, bars, ice cream parlors, wine bars, clubs and restaurants.