As was customary, the Titulo and Antititulo were present in the Sanctuary area of the ancient Norman basilica. These were later removed during the renovation of the entire presbytery. The Antititulo, in particular, was a transverse space that divided the triapsidal area from the Titulo area. The latter also included the choir, the space for the tombs of the kings and the tombs of the bishops. The works, which lasted in the last decades of the 18th century, also led to the creation of a transept with a dome in the centre and two chapels, one dedicated to the Blessed Sacrament and one to St Rosalie. In addition, a more incisive extension of the choir to the main apse led to the formation of a large central chapel.