Katedra św. Justa

The 14th-century Romanesque building integrates archaeological remains from the Roman era and early Christian elements. The structure features an inception date tracing back to the early 11th century.

The interior is known for its Byzantine mosaics and medieval artworks. Notable features include a Mascioni organ installed in 1922 and a Carlist mausoleum. The site also functions as a religious museum, preserving various historic art treasures.

Dedicated to Saint Justus, the building is the seat of the Bishop and serves as an active parish church. It holds the official status of a minor basilica.