Amorgos is the easternmost Cyclades island, famous for its sheer cliff faces, the 11th-century Hozoviotissa Monastery, and crystal-clear diving waters. It's reachable in 6–8 hours by ferry from Piraeus and offers a raw, spiritual atmosphere you won't find anywhere else in the Aegean. Piraeus to Amorgos: 5.5–8.5 hours.
Amorgos sits at the eastern edge of the Cyclades, closer to the Dodecanese than to Mykonos or Santorini. Towering cliffs drop straight into the Aegean Sea, and old footpaths still connect villages that haven't changed much in decades. Luc Besson filmed "The Big Blue" here in 1988 (the story of real-life free-diver Jacques Mayol), and the island has drawn hikers, divers, and seekers of quiet Greek island life ever since.
Two harbours serve the island: Katapola in the southwest and Aegiali in the northeast. Between them, the Hozoviotissa Monastery clings to a 300-metre cliff above the sea, and the hilltop Chora spreads its whitewashed lanes and windmills along a ridge with views that don't quit. Nature runs the show here; modern tourism takes a back seat.
If you're used to pool bars and organized beach clubs, Amorgos isn't that island. But if you're willing to hike the ancient paths between mountain villages, swim in coves you can only reach by trail or boat, and sit in tavernas where the raki flows and the fish was caught that morning, it'll repay every hour of the ferry ride.