The Princes' Islands (Adalar in Turkish) are a group of islands in the Sea of Marmara, near Istanbul. They are known for their tranquil atmosphere, historic charm, and beautiful landscapes, offering a stark contrast to the bustling city life of Istanbul.

Büyükada (Big Island)
The largest and most popular of the islands.
Known for its historic mansions, monasteries, and churches.
Attractions include the Hagios Giorgios Church and Monastery and the Splendid Palace Hotel.

Heybeliada (Saddlebag Island)
Known for its lush greenery and serene environment.
Home to the Naval Cadet School and the Hagios Nikolaos Greek Orthodox Church.
Popular spots include Değirmenburnu Nature Park and the Heybeliada Sanatorium.