The church has a façade divided into three parts by two fake columns, with a central triple
mullioned window with marble columns; the small bell tower on the right is in Spanish style and is a late addition dating to the Spanish rule of Sardinia. on the left of the façade is inserted an early
mediaeval marble slab from another edifice, perhaps portraying Christ entering Jerusalem, or a clash of knights. The apse is decorated with small
corbels, and is surmounted by a large
pediment. The interior, showing the
granite construction of the basilica, is on a nave and two aisles divided by columns and
piers. In the middle of the apse are two ruined frescoes, depicting St. Simplicius and Victor of Fausania, who was bishop of Olbia after 595 and is considered a saint only in this city. Under the altar are the relics of Simplicius, discovered in 1614 while excavating the church's
crypt. The church was granted the title and privileges of a "
minor basilica" by
Pope John Paul II in 1993. == Sources ==