St. Dominus Cathedral

St. Dominus Cathedral, or the Cathedral of Saint Domnius, stands at the heart of Split, Croatia, as one of the oldest and most remarkable cathedrals in Europe. Originally constructed in the 4th century as the mausoleum of Roman Emperor Diocletian, the building was transformed into a Christian cathedral in the 7th century, blending layers of pagan, medieval, and Christian history. The cathedral’s octagonal design, encircled by 24 original Roman columns, is a striking reminder of its ancient origins.

Visitors enter a space rich in architectural and artistic detail. The domed interior is supported by Corinthian pillars and adorned with mosaics, while the walnut-carved doors by Andrija Buvina—depicting scenes from the Gospels—are a highlight for many. The main altar houses relics of St. Domnius and St. Anastasius, both early Christian martyrs. The Romanesque bell tower, rising 57 meters above the city, is an iconic feature; climbing it rewards you with panoramic views over Split and the Adriatic coast.

Admission typically includes access to the cathedral’s crypt, treasury, and the nearby baptistery, formerly the Temple of Jupiter. The cathedral remains an active place of worship, with centuries-old liturgical traditions, especially during the annual celebration of St. Domnius’s day. Visiting St. Dominus Cathedral offers a unique opportunity to experience Split’s layered history and its enduring spiritual and cultural significance.