You'll find Santorini to be less crowded in the winter months. However, you'll still have lots to do and see. On your winter Greek vacation, you can visit the hot springs of Santorini (also known as the Volcano Santorini) and Nea Kameni (an active volcano town), which you will reach by boat. Of course, there are numerous Greek restaurants and coffee shops where you can grab a cup of coffee and baklava, a layered pastry dessert.