The volcanic island of Santorini lies north of Crete. And this daytrip by fast cat is a great chance to take a close-up look at it. Curved around a colossal, sea-filled caldera that was formed by a massive volcanic eruption 3,500 years ago, it's all black cliffs, whitewashed villages and blue-domed churches. It's picture-postcard Greece.

Once you're on dry land, you'll take off on a scenic tour, exploring many of the island's attractions and learning about its history. Explore a town where whitewashed houses, cobbled streets and tavernas cascade down the cliff-face in steep terraces.

You'll spend about 90 minutes in Oia – the village with the most magnificent views on Santorini. From its lofty clifftop perch, the panorama over the volcanic caldera is pure wow-factor. Then it's on to Fira, the island's capital. You'll have an hour or so to snap up treats in the quaint shops and boutiques.