It is believed that in the 4th century BC, the city was founded , which was strongly influenced by Greek colonies. Only after the arrival of the Romans city develops and expands. It became a great port, political, military and commercial center. Temples, baths, forum, amphitheater, plazas, warehouses, public and residential buildings are being built. In the conflict between Caesar and Pompey City sides with Caesar, who wins the war. As a sign of gratitude he promotes it to the colony - "Colonia Martia Julia Salona".