Francesco and the crew of the Black Swan hit the open sea and head down the Croatian coast. Next stop is Pula and the extraordinary amphitheatre, where fights to the death were regular Roman entertainment, as well as the Temple of Augustus and the great Arch of the Sergians. Next up is a stopover at the isolated lighthouse of Porer which has saved many a Venetian ship navigating these treacherous waters. And then to the beautiful city of Split where the astonishing palace of Diocletian - the oldest inhabited palace in the world.