The patron of Cortemaggiore is Saint Lawrence, celebrated on 10 August in the Oratory of San Lorenzo.
On the weekend nearest to 19 March, the date of Saint Joseph's feast, the traditional Fiera di San Giuseppe is held, an event established by Gian Ludovico Pallavicino in 1480 and never interrupted since: a longevity of over five hundred years. The town also holds the Basilica of Santa Maria delle Grazie and the Castello di Chiavenna Landi.