Glamorous Santorini, in the southern Aegean's Cyclades islands, curves round a giant lagoon, a caldera left by a volcanic eruption. The island's capital, Fira, clings to cliffs above, providing stunning views of the lagoon below. Santorini's nightlife has become as hot as its volcanic past. Ruins, including the volcanic ash- preserved town of ancient Akrotiri, amaze those with a bent for ancient history. Hydrofoils, ferries and catamarans connect Santorini to other islands and the mainland.