Islands of the Cyclades, the pre-eminent summer destination, where it is not necessary to travel by car, are all the Small Cyclades: The two Koufonisia: Pano and Kato, Schinoussa, Herakleia, and Donoussa. Pano Koufonisi, more touristic than all the other islands of the complex, provides you with everything!
How do you get around in Greece without a car?
The buses, the train, and the Athens metro system are excellent ways to travel using public transport. That being said, as you can imagine, public transport is not the most luxurious way to get around Greece nor the easiest. Another -much less affordable- alternative to public transport is the use of taxis.
Can you go to Santorini without a car?
The best way to get around Santorini is on foot or by bus. You'll see that it's easy to walk around the tiny seaside towns, but the bus is best to get from one town to another. There are KTEL bus routes from Fira (the capital city) to many different destinations around the main island.