Split (/splɪt/; Croatian: [splît] , see other names) is the second-largest city of Croatia after the capital Zagreb. It is the largest city in Dalmatia, largest city on the Croatian coast, and the seat of the Split-Dalmatia County. The Split metropolitan area is home to about 330,000 people. It lies on the eastern shore of the Adriatic Sea and is spread over a central peninsula and its surroundings. An intraregional transport hub and popular tourist destination, the city is linked to the Adriatic islands and the Apennine Peninsula. More than 1 million tourists visit it each year.
The city was founded as the Greek colony of Aspálathos (Ancient Greek: Ἀσπάλαθος) in the 3rd or 2nd century BCE on the coast of the Illyrian Dalmatae, and in 305 CE, it became the site of the Palace of the Roman emperor Diocletian. It became a prominent settlement around 650 when it succeeded the ancient capital of the Roman province of Dalmatia, Salona. After the sack of Salona by the Avars and Slavs, the fortified Palace of Diocletian was settled by Roman refugees. Split became a Byzantine city. Later it drifted into the sphere of the Republic of Venice and the Kingdom of Croatia. For much of the High and Late Middle Ages, Split enjoyed autonomy as a free city of the Dalmatian city-states, caught in the middle of a struggle between Venice and Croatia for control over the Dalmatian cities.