Split, the second largest city in Croatia, is the home of the Diocletian Palace, a UNESCO World Heritage Site complex built in the 3rd Century and covering a considerable area in the heart of the old town. Diocletian, noted for his persecution of early Christians, was supposedly a native of nearby Salona. As an Emperor of Rome he ruled for 20 years before retiring to this palace. The ancient town was built around the Emperor’s castle and nowadays is a major port and industrial center, as well as a perfect base for day trips to many nearby attractions.