There are as many opinions about which islands are best to explore as there are people expressing them.  Santorini is not the largest island in the Cyclades group, but it has something for everyone.  It's a barren island as far as forests are concerned, but it makes up for the lack of greenery with its other unique qualities.   

Aside from the fantastic views you can enjoy archaeological sites (Akrotiri and Ancient Thera), the volcano hot springs, museums, hiking trails, countless restaurants, a very active nightlife, shopping for every budget from postcards to custom gold jewelry, art galleries, ethnic music venues, organized island tours, sunset cruises, luxury hotels and spas, youth hostels, several wineries, numerous car and scooter rental agencies (wait until you get there, it's cheaper than booking in advance) and an airport for easy access from Athens by commercial jet.

Lee Marks, brotherleeloveATmsn.com