The Tyrrhenian between the regions Liguria, Tuscany, Sardinia and Lazio is one of the most beautiful places in the world, especially the islands if you have the chance to sailing across them and stop by. Ponza is a couple of hours far from Formia by ferryboat, it takes less by hydrofoil. There are ferries leaving from Naples, Terracina or Anzio. Ventotene is connected to Formia, Naples and Terracina either, but not the whole year round, better to check the timetables to choose your suitable transfer. They are small islands, but it takes some days to visit them carefully: Ponza is big enough to deserve a full weekend, while Ventotene is just 1.5 squared km wide, but it is full of things to do and see.