Châtel-Argent was an Italian medieval castle in the Alpine town of Villeneuve. It is now a ruin. As with many other castles in the region, Châtel-Argent overlooks the Dora Baltea River which runs through the Aosta Valley.
The ruins can be accessed from Villeneuve by walking a staircase carved into the rock of the valley wall. The castle is located in the town of Villeneuve in the Aosta Valley region, at about 10 km west of the city ofAosta. The most prominent feature left in the ruins is its watchtower keep measuring just under 10 meters in diameter which overlooks the town below. The ruins themselves cover about 6,300 square meters. When the castle was whole, it was estimated to be able to hold 700 people in times of danger.