Cathedral of Saint Domnius

Overview

The Cathedral of Saint Domnius (Sveti Duje) is the oldest Catholic cathedral building in the world still in use for its original purpose. Originally built as Emperor Diocletian's mausoleum in the 4th century, it was converted into a Christian cathedral in the 7th century.

Highlights

• Diocletian's Mausoleum: The octagonal core with its original Roman columns and dome design is remarkably intact.
• Wooden Doors: The 13th-century carved walnut doors by Andrija Buvina depicting scenes from the life of Christ are a masterpiece of medieval sculpture.
• Altar of Saint Anastasius: The 15th-century altar by Juraj Dalmatinac features exquisite Gothic relief carvings.

History

Built as Diocletian's mausoleum around 305 AD, the structure was converted into a cathedral dedicated to Saint Domnius in the 7th century — ironically, a saint martyred under Diocletian's persecution of Christians. The bell tower was added between the 12th and 16th centuries.

Visitor Tips

• Combined Ticket: Purchase a ticket covering the cathedral, crypt, baptistery, and bell tower.
• Duration: 30–45 minutes for the cathedral interior.