The cathedral of St. Duje is known for many things but what makes it really particular is the fact that within it is the mausoleum of the Roman emperor, Diocletian, a pagan and banisher of Christians. Over history, the pagan antique, Christian, medieval and modern heritage was reconciled in this cathedral. The inside of the cathedral preserves numerous valuable sacral items whilst the walnut- door-post was carved by the famous Split inhabitant Andrija Buvina in 1214. The cathedral’s bell-tower is 57 metres high and is a trade mark of the town. Its construction began in the 13th century. Steps lead to the top of the bell-tower from where there is a unique view over the Diocletian palace and the whole of Split.
Today the cathedral is an important liturgical place from where in May, every year, a famous procession begins on the day of St. Dujam, the town's patron saint.