Castelvecchio (Castellum vetus) is the ancient fortified village of Castel Goffredo, in the province of Mantua Lombardy region in Italy, surrounded by walls and a moat. The boundaries currently correspond to the garden of the Palazzo Gonzaga-Acerbi to the north, to vicolo Remoto and vicolo Cannone to the east, to Piazza Mazzini to the south and to piazzetta Castelvecchio and vicolo Castelvecchio to the west.