In a climate of piety and traditional atmosphere, is celebrated every year on August 15th the church of Panagia Portaitissa. It is the biggest and most important festival of the island with the customs and traditions remain unchanged over time. On the eve of the feast after the evening spent a great feast to the sounds of the violin and the lute, with traditional dances that keep until the wee hours. The feast is on the precinct called Rodia. The next day the feast apanalamvanetai while in Pera Gialos organized every year this day the "koukania" a series of fun games involved children and adults.
Celebrated on February 2. The monastery Flevariotissa Panagia is a complex consisting of the nave and a series of low buildings forming among them a spacious courtyard. A beautiful whitewashed church - Cycladic style - vaulted cruciform type with a dome resting on four oxykorfa gothic arches, can accommodate over 50 people. On the northern wall, located inside a small cave chapel. Here, according to tradition was the icon of the Virgin Mary. Today the festival of Panagia Flevariotissa, although amid the dead of winter is the most favorite island.