to his death in 1475 and certainly until 1473. Niccolò di Giovanni Fiorentino Between 1475 and 1505 the work was overseen by Tuscan master Niccolò di Giovanni Fiorentino (Nicola Firentinac), from the Donatello school of sculpture who developed as a sculptor and builder in Dalmatia. He continued the building in the Tuscan Renaissance style, completing the extensive galleries, building the vault in the central nave, the outer sculptures of St. Michael, St. James and St. Mark. The barrel roof is made from a line of enormous stone slabs and considered a marvel of construction at the time, and the upper façade. He also built the triforias (parallel galleries) and worked on the presbytery and sanctuary. Although the dome of Šibenik Cathedral was built after the dome in Florence, Niccolò di Giovanni Fiorentino used an octagonal drum in its construction, before Bramante and Michelangelo, in its original function as the transition from the square base to the circular dome. The execution of the cupola is considered one of the best achievements of Renaissance architecture. Inside the cathedral Inside the cathedral there are four large, evenly matched columns on which the dome rests. The builder decorated the capitals and came to arrangements with the nobles who were to finance the building of chapels, on condition that they would be free to choose their own builders. In the first chapel on the right-side, there is the sarcophagus of the bishop, humanist and writer Juraj Šižgorić (1420–1509) which is the work of Andrija Aleši based on a design by Juraj Dalmatinac. Aleši also created the statue of St. Elijah which stands behind the bishop's throne. On the left-hand side is the sarcophagus of Bishop Ivan Štafilič, during whose life the cathedral was completed. Beneath the choir there are the graves of two bishops, with reliefs: on the right Bishop Calegari and on the left, Bishop Spingarola. The latter is the work of the local artist Antun Nogulovič. Opposite the famous Altar of the Holy Cross (Sveti Križ) made by Juraj Čulinovič (Giorgio Schiavone) is buried (1433 or 1446–1505). On the altar there is a painting by Felipe Zaniberti. Amongst other altars to the left of the entrance is the Altar of the Holy Three Kings with a painting by Bernardo Rizzardi, according to the ground plan of Juraj Dalmatinac (see above). The fragments of the mosaic of the Holy Three Kings in St. Mark's