Diocletian's Palace
One of the world's most impressive Roman monuments, Diocletian's Palace was built around AD 305 as a retirement residence for Emperor Diocletian. Today it forms the living heart of Split's Old Town, with thousands of residents, shops, restaurants, and bars within its ancient walls. The palace covers about 3 hectares and contains the Cathedral of Saint Domnius, the Temple of Jupiter (now a baptistery), the Peristyle square, and four gates (Golden, Silver, Bronze, and Iron).