The Cathedral of San Biagio in Maratea is located at the highest point of the oldest part of the village, known as Castello, and holds the relics of the patron saint Biagio. Tradition has it that it arose on the site of a pagan temple dedicated to Minerva. When it received the relics of the Armenian saint, it became the shrine of Saint Blaise, who was elected patron saint of the town: such the event is commonly dated to the year 732. On March 4, 1562, Pope Pius IV granted a treasure of indulgences to the church and recognized what Catholics regard as the miracle of the holy manna.
The façade of the church features a three-arched portico in neoclassical style, with four columns supporting a triangular tympanum, in which is a niche with a small white marble statue of St. Blaise. The church is divided into four rooms: three naves and the presbytery, which is almost as large as the nave.
The oldest work in the church is the fresco depicting the Madonna and Child, commonly called the Madonna of the Pomegranate, dated to the late 15th century, located on the first pillar to the left of the nave. Next is the marble tabernacle, dated 1519, donated to the church by Guglielmo Diodato. The work depicts an ark, complete with prayers contemplating the Blessed Sacrament. The ancient stone baptismal font, placed between a side aisle and the nave, dates to the 15th-16th centuries.