St. John's Co-Cathedral
The Co-Cathedral of St John is nothing short of a gem and quite simply a must for any tourist. Described as the first complete example of high Baroque anywhere, it epitomises the spiritual and military role of its patrons.
The Cathedral is a showcase to Mattia Preti who intricately carved stone wall designs, as well as the painted vaulted ceiling and side altars with scenes from the life of St John. Among the treasures found in the Cathedral are the unique Caravaggio painting depicting the beheading of St John, the extraordinary paving of more than 300 marble tomb slabs (the burial place of several former European princes), and the splendid vaulted central nave with frescoes of Mattia Preti.