The church is located on a plateau on mountain Krikelos and it is dedicated to John the Evangelist. According to tradition, it was built by a sea captain who made a solemn promise for his ship to be saved when he was sailing on the dangerous sea area NE of Aegiali. It is considered to have been built between the 7th and the 9th century and it is a three-aisled basilica with a dome. It is worth joining the festivals that are organized here twice a year.