Hidden Gems of Greece: 12 Lesser-Known Greek Islands Worth Discovering

Santorini, Mykonos and Crete may attract much of the international attention, but some of the most rewarding Greek island experiences can be found far away from the country’s most famous destinations.

Across the Aegean and Ionian seas are smaller islands where tourism remains relatively low-key, beaches are less crowded and traditional villages continue to play a central role in island life.

Choosing a lesser-known island does involve compromises. There may be fewer hotels, less nightlife and more limited transport connections. But for travellers prepared to slow down, these islands can provide exactly the kind of Greek escape they were hoping to find.

Here are 12 Greek islands worth considering when you want to venture beyond the usual destinations.

1. Astypalaia

Astypalaia sits between the Cyclades and Dodecanese and seems to borrow characteristics from both.

Whitewashed houses climb the hillside beneath a Venetian castle, giving the main town a classic Greek island appearance. Yet Astypalaia receives nowhere near the visitor numbers of Santorini or Mykonos.

Its unusual butterfly-like shape creates a coastline filled with bays and beaches, while the relatively small population contributes to its relaxed atmosphere.

Astypalaia is particularly appealing to independent travellers who want beautiful scenery without a heavily developed resort environment.

Best for: Whitewashed villages, scenery and a relaxed escape.

2. Amorgos

Amorgos lies on the eastern edge of the Cyclades and is known for dramatic landscapes and deep blue water.

The island’s rugged terrain makes it particularly attractive to walkers, while traditional villages provide a quieter alternative to the busiest Cycladic destinations.

One of its most remarkable sights is the Monastery of Hozoviotissa, dramatically built into a cliff high above the Aegean.

Amorgos suits travellers who enjoy scenery and exploration more than resort facilities.

Best for: Hiking, dramatic landscapes and traditional island life.

3. Folegandros

Folegandros has become better known in recent years, but it remains considerably quieter than neighbouring Santorini.

Its main settlement, Chora, is one of the island’s highlights, with whitewashed buildings, attractive squares and a spectacular cliff-top setting.

The island is small and relatively simple to explore. Rather than a long checklist of attractions, its appeal lies in atmosphere, scenery and slowing down.

Folegandros is particularly well suited to couples.

Best for: Couples, peaceful evenings and Cycladic scenery.

4. Sifnos

Sifnos offers many of the characteristics travellers associate with the Cyclades without the intense tourism of the group’s biggest names.

Whitewashed villages, walking trails, beaches and traditional churches are scattered across the island.

Sifnos is also particularly well regarded for its food, making it a strong choice for travellers who see long lunches and dinners as an important part of their holiday.

Best for: Food, villages, walking and relaxed travel.

5. Serifos

Serifos is another Cycladic island that often sits in the shadow of more famous neighbours.

Its impressive Chora climbs the hillside above the port and provides extensive views across the Aegean.

The island has numerous beaches and retains a relatively low-key atmosphere, particularly compared with Mykonos and Santorini.

Its accessibility from Athens also makes Serifos useful for travellers who want a quieter island without an especially complicated journey.

Best for: Beaches, scenery and a quieter Cyclades experience.

6. Tilos

Tilos is a small Dodecanese island between Rhodes and Kos.

Despite its location close to two major tourist destinations, Tilos has remained comparatively peaceful.

The island’s mountainous landscape, walking routes and small settlements make it particularly attractive to travellers interested in nature and slow travel.

Tilos is unlikely to suit someone looking for extensive nightlife or large resorts, but that’s precisely why many visitors choose it.

Best for: Nature, walking and tranquillity.

7. Nisyros

Nisyros offers something very different from the conventional Greek island holiday.

The island is volcanic, and visitors can travel into the enormous Stefanos crater, one of its most unusual attractions.

The harbour town of Mandraki has traditional whitewashed streets, while villages scattered across the volcanic landscape provide rewarding places to explore.

Nisyros can be visited from nearby Kos, but staying on the island allows you to experience it after many day visitors have departed.

Best for: Volcanic landscapes, villages and something different.

8. Leros

Leros is one of the less internationally famous members of the Dodecanese.

Its deeply indented coastline creates numerous bays and natural harbours, while settlements are spread around different parts of the island rather than concentrated in one dominant resort.

Leros also has an interesting architectural and military history reflecting its strategic position in the Aegean.

It is particularly suitable for travellers who enjoy exploring independently.

Best for: History, quiet bays and independent travel.

9. Ithaca

Known throughout the world through Homer’s Odyssey, Ithaca remains considerably less visited than neighbouring Kefalonia.

The island is mountainous and green, with small villages and sheltered coves scattered around its coastline.

Its associations with Odysseus provide an additional layer of history and mythology, but Ithaca’s greatest attraction may simply be its peaceful atmosphere.

It is a natural choice for travellers exploring the Ionian Islands who want somewhere quieter.

Best for: Mythology, scenery, villages and peaceful holidays.

10. Kythira

Kythira lies between the Peloponnese and Crete and sits somewhat apart from Greece’s major island-hopping circuits.

That relative isolation is part of its appeal.

Visitors will find beaches, waterfalls, traditional villages, historic sites and a rugged landscape that rewards exploration by car.

Because Kythira doesn’t fit neatly into many standard Greek island itineraries, it often receives less attention than it deserves.

Best for: Road trips, beaches and independent exploration.

11. Symi

Symi is certainly no secret to travellers visiting nearby Rhodes, but it remains a very different destination from Greece’s major resort islands.

Arriving at Gialos harbour is one of the most memorable approaches to any Greek island. Neoclassical houses in shades of yellow, orange and pink climb the hillsides surrounding the waterfront.

Many visitors come on day trips, but staying overnight reveals a much quieter side of the island.

Best for: Harbour scenery, couples and short escapes.

12. Alonissos

Alonissos is part of the Sporades and is particularly appealing to travellers interested in nature and the sea.

The island forms part of the National Marine Park of Alonissos and Northern Sporades, an important protected marine environment.

Its forested landscape and clear water create a very different appearance from the drier Cyclades.

Alonissos is a good choice for travellers wanting beaches and nature without the same level of tourism found on neighbouring Skiathos.

Best for: Nature, swimming and peaceful surroundings.

Which Lesser-Known Greek Island Should You Choose?

That depends on what you’re hoping to escape — and what you still want from your holiday.

For a quieter Cyclades experience, consider Amorgos, Folegandros, Sifnos or Serifos.

For somewhere particularly peaceful, Tilos deserves consideration.

For unusual landscapes, look at Nisyros or Kythira.

Couples may particularly enjoy Folegandros or Symi, while nature lovers should consider Alonissos.

And travellers interested in Greek mythology may find Ithaca irresistible.

Are Lesser-Known Greek Islands Cheaper?

Not necessarily.

Avoiding Santorini and Mykonos can certainly reduce accommodation and entertainment costs, but smaller islands have fewer hotels and less competition between tourism businesses.

Transport can also become more complicated.

The real reason to choose a lesser-known island shouldn’t simply be to save money. It is the opportunity to experience a slower and less heavily developed style of Greek island travel.

Getting to Greece’s Hidden Islands

Transport is the main factor to consider when planning a trip to smaller islands.

Many don’t have international airports, and some don’t have airports at all. Reaching them may require a ferry from Athens, mainland Greece or a larger neighbouring island.

One particularly effective strategy is to fly to a major gateway and continue by ferry. Rhodes can provide access to smaller Dodecanese islands, while Athens provides connections into the Cyclades.

See our Getting to the Greek Islands: Flights, Ferries & Travel Options guide when planning your journey.

When Should You Visit?

For smaller islands, seasonality matters even more than it does on major destinations.

May, June and September are particularly attractive because the weather is generally suitable for exploring while avoiding the busiest weeks of summer.

July and August provide the greatest summer atmosphere and usually the strongest transport connections.

Outside the main tourist season, some accommodation and restaurants may close and ferry services can become less frequent.

Our Best Time to Visit the Greek Islands guide explains the seasonal differences in more detail.

Look Beyond the Famous Names

There is nothing wrong with visiting Santorini, Mykonos or Rhodes. They became famous for good reasons.

But Greece has far more to offer than its handful of internationally recognised islands.

Sometimes the most memorable part of a Greek holiday is arriving somewhere you knew almost nothing about beforehand — finding a quiet beach, spending an evening in a village square or watching the last ferry leave after the day visitors have gone.

For travellers willing to venture beyond the obvious choices, Greece still has plenty of islands waiting to be discovered.