Six daily boats from Athens's port of Piraeus ply the wine-dark Aegean to Santorini. The trip takes from to four to 10 hours, depending on route, boat, and the weather. Try to make sure your boat enters the harbor before sunset, since this is a spectacular sight, one crucial to savoring Santorini's vibe. There are also daily connections to Paros, Naxos, and Anafi, and there are regular summer connections to Folegandros, Crete, Ios, Karpathos, Kasos, Amorgos, Kea, Kimolos, Kos, Koufonisi, Kythnos, Milos, Mykonos, and Rhodes. Reservations are needed in summer and at Easter, for cars all year. The port town, Ormos Athinios, is only that, and you must proceed by vehicle to your destination. Buses generally meet the boats, and the drive up the volcano-cut cliff is amazing. For schedules check www.openseas.gr and for everything else go to www.greeka.com. The Santorini Port Authority (22860/22239) sometimes gives detailed information.