The most important festival in Cassà de la Selva is the Festa Major de la Santa Espina, the town fair celebrated to coincide with the third full moon of spring, 56 days after Holy Week. The Festa Major allows you to immerse yourself in the essence of the town and the most distinctive features of the town are on full displayed. 

Among the most outstanding events of the festival is the Night of the Musicians, in which more than fifty musicians from Cassà form a monumental cobla or line ensemble; Cassà is imbibed with music, featuring concerts dotted all around town, or the popular puppet dances of the gegants, capgrossos and cavallets, in addition to concerts and festival tents. Young and old are welcome at the events of the Festa Major de Cassà.