The Cathedral of Saint Domnius is the most famous landmark in Split, located in the heart of Diocletian's Palace. Originally built as Diocletian's mausoleum in the early 4th century, it was later converted into a Christian church, making it the oldest cathedral in the world that still exists. The cathedral is dedicated to Saint Domnius, the patron saint of Split, and is known for its rich history, beautiful architecture and valuable works of art.
