This eternally young city with around 200,000 inhabitants has lived its urban rhythm for 1700 years with Diocletian's Palace at its heart, which is also the historical center of the city and a UNESCO World Heritage Site. The Cathedral of Sv. Dujam [St. Domnios], the patron saint of Split, is located in the mausoleum of Emperor Diocletian, and its sumptuous interior is a gathering place for many of the faithful and tourists. Many valuable monuments of culture are located outside the walls of Diocletian's Palace (Renaissance Prokurative Square, palaces, churches, museums...).
Plan your trip as far in advance as you can. Last minute travel is stressful to plan, and can often end up being more expensive.