Nothing remains of the first cathedral, built in the early 11th century. A new building was built in 1153 by order of Roger II of which only remains the bell tower embellished with mullioned windows, showing two lions in lava stone, symbol of Norman power and the basic plant of the building. The church was destroyed by the earthquake of 1694 and rebuilt in Baroque style in the eighteenth century with the personal funds of Bishop Spinelli. The central nave has a coffered ceiling with inlays and overhangs in decorated wood, the work of Neapolitan masters. At the bottom of the left aisle, in the lunette, there is the Byzantine fresco of the "Madonna with Child and Archangels", which refers to the iconography of the rock church "Madonna della Croce" of Matera.
Just outside the town, along the road to Rapolla, you can visit the rock church of Santa Margherita carved into the tuff bank and embellished with medieval frescoes made by two painters of different formation, one Byzantine and the other Catalan.
In contrada Giacomelli, you can visit the rock church of S. Lucia. The nave, vaulted barrel, preserves frescoes of Byzantine tradition, depicting the Stories of St. Lucia, commissioned by the priest Biagio in 1292.