Cathedral of Saint Domnius

The Cathedral of St. Duje (or San Domnius, in Croatian, Cathedral of St. Svetog Dujma) is a Croatian Catholic cathedral that belongs to the Archdiocese of Split-Makarska. Originally the mausoleum of Emperor Diocletian, it was later made into a cathedral in the 8th century and makes up part of Diocletian's Palace, and is considered now a World Heritage Site by UNESCO.