The patron saint of Trecate is Saint Clement, celebrated on the third Sunday of September together with Saint Cassian of Imola, whose devotion is kept in the Church of San Cassiano.
The town also holds the church of Santa Maria Assunta, that of San Bernardo and that of San Francesco. Among the town's places of interest are also the Teatro Silvio Pellico and the Tre Fontane and Marino Spring.