The patron saints of Valenza are Saint James the Greater, celebrated on 26 January, and Saint Maximus of Pavia, celebrated on 25 July.
The town holds the Duomo di Valenza, the parish church of Sant'Eusebio di Vercelli and that of the Confraternita della Santissima Trinità. Among the town's places of interest are also the Teatro Sociale and the church of San Bernardino.