Büyükada, the largest of the islands, has several beaches that are open to the public. It has monuments and historical sights to visit as well such as Aya Yorgi Church and Hamidiye Mosque built by sultan Abdulhamit II. There are beautiful restaurants right on the water as well as cafes and ice cream shops to enjoy.
Heybeliada is the second largest island with lush lush green land along the crystal clear water. You can take a ride on a horse drawn carriage around this island just like in Büyükada and also has a variety of restaurants, cafes and shops.