Split (Croatian pronunciation: [splît]) is a city in the Croatian region of Dalmatia, on the eastern shores of the Adriatic Sea, centred on the structure of the ancient Roman Palace of the Emperor Diocletian and its bay and port. With a population of 178,192 citizens and a metropolitan area numbering up to 350,000, Split is by far the largest Dalmatian city and the second-largest city of Croatia. Spread over a central peninsula and its surroundings, Split's greater area includes the neighboring seaside towns as well. An intraregional transport hub and popular tourist destination, the city is a link to numerous Adriatic islands and the Apennine peninsula.
Split is also one of the oldest cities in the area. While it is traditionally considered just over 1,700 years old counting from the construction of Diocletian's Palace in 305 CE, archaeological research relating to the original founding of the city as the Greek colony of Aspálathos in the 4th century BCE establishes the urban tradition of the area as being several centuries older.
Split is situated on a peninsula between the eastern part of the Gulf of Kaštela and the Split Channel. The Marjan hill (178 m), rises in the western part of the peninsula. The ridges Kozjak (779 m) and its brother Mosor (1339 m) protect the city from the north and northeast, and separate it from the hinterland.