The patron saints of Seveso are Gervasius and Protasius, celebrated with Calendimaggio, on the Monday after the first Sunday of May.
The municipal territory also holds Villa Dho, whose garden features plants of considerable value, a red clay tennis court and a prefabricated wooden pavilion displayed at the 1918 Milan Trade Fair. The town also holds the Bosco delle Querce nature park and the church of the Blessed Virgin Immaculate.
