Castelmassa

Castelmassa is a "comune" (municipality) in the Province of Rovigo in the Italian region Veneto, located about southwest of Venice and about west of Rovigo. 
Castelmassa borders the following municipalities: Calto, Castelnovo Bariano, Ceneselli, Felonica, Sermide.
International relations.
Twin towns — Sister cities.
Castelmassa is twinned with: