Pula is another lively city in Istria with Roman roots. The very beautiful amphitheatre near the sea is one of the historic highlights and will certainly impress you.
After visiting the arena for a few hours, you can explore the car-free city centre where the Roman Forum (plaza) takes a central place. Nearby you can find the Roman Temple of August and the city hall. The forum also hosts a few restaurants where you can take your lunch.
After visiting Pula, head for the beaches on the Premantura peninsula. Premantura is a protected area south of Pula and as such you’ll have to pay a small fee to enter it. Once inside the protected area dirt tracks lead you to a dozen of hidden beaches, creeks and bays.