The patron of Gissi is Saint Bernardine of Siena, celebrated on 20 May in the Church of San Bernardino: the festivities run from 18 to 20 May, and also involve Saint Nicholas of Bari.
Set within a green oasis, in the Santa Lucia pine grove stands a small church that is the focus of a religious event in her honor, the destination of a procession by the faithful. The town also holds the Ethnographic Museum.