The patron saints of Petralia Soprana are the apostles Peter and Paul, celebrated on 29 June at the end of five days of festivities that bring the faithful to the town from neighbouring municipalities and its many hamlets. On the preceding evenings a procession is held with reduced-size statues of the saints, accompanied by the sound of drums; on the feast day itself the procession takes a different form, with the town's two religious confraternities carrying up to twenty statues in the cortège.
The mother church of the Apostles Peter and Paul, rebuilt in the 14th century at the wish of the Ventimiglia family, has a Latin-cross plan and three naves; its façade features two bell towers, one from the 15th century and the other from the 18th, connected by a portico of eighteen columns made by the Librizzi brothers of Petralia Sottana. Inside are held 17th-century paintings, including a Deposition attributed to Jusepe de Ribera, the statues of the patron saints, and the first Crucifix attributed to friar Umile da Petralia.
