The church, in the monastery complex of San Salvatore-Santa Giulia, is one of the most important testimonies of early medieval religious architecture preserved off the ground. It has a plan with three aisles divided by columns. The extensive use of the re-used material from the classic age and Byzantine origin offers one of the most important Lombard examples. The church building was in fact built by the ruling Lombard monarchs Desiderio and Ansa and was entirely decorated with stuccowork and integrated frescoes. In the south wall a special tomb was extracted, of which remains an archway which is supposed to be from the tomb of Queen Ansa. In front of the archway, there are three graves with Capuchin-style roofing. After the arrival of the relics of Santa Giulia in 761, the church was provided with a crypt. It is entered in UNESCO’s World Heritage List.