Salona is an ancient town just outside of Split, Croatia. Originally set up by the Greeks and later conquered by the Romans, it was once the capital of the Roman province of Dalmatia. It was Diocletian's hometown before he retired to his newer palace in Split. The town was mostly destroyed by invaders by Avars and Slavs in the 6th and 7th centuries, and today only the ruins remain. There is a 1st century Roman aqueduct that brought in water from the River Jadro as well as the remains of thermal baths.
Salona also has ruins of early Christian graveyards and basilicas. Several of the city's old gates are still in good condition. Visitors can admire what was once an amphitheater that could seat up to 20,000 people. Unfortunately Venetians raided the amphitheater in the 17th century, taking much of the marble to build a palace. Many relics and artifacts uncovered in Salona are now on display at the Archaeological Museum of Split.