Heybeliada, or Heybeli Ada, is the second largest of the Princes' Islands in the Sea of Marmara, near Istanbul, Turkey. It is officially a neighbourhood in the municipality and district of Adalar, Istanbul Province, Turkey. Its population is 4,424 (2022). Its name, meaning 'with a saddlebag' in Turkish, in supposed reference to the valley between two hills.
Naval Cadet School in Heybeliada
View from north–northeast
The Princes' Islands, officially just Adalar ; alternatively the Princes' Archipelago; is an archipelago off the coast of Istanbul, Turkey, in the Sea of Marmara. The islands constitute the municipality and district of Adalar within Istanbul Province. With a total land area of 11 km2 (4.2 sq mi), it is the fifth smallest district in Istanbul, and with a permanent population of 16,690 (2022), it is by far the least populous district in Istanbul.
Statue of Atatürk in Büyükada, the largest of the Princes' Islands
Aerial view of the four main islands from left to right (Büyükada, the largest of the Princes' Islands in the Sea of Marmara, Heybeliada, Burgazada, and Kınalıada).
Prinkipo Greek Orthodox Orphanage in Büyükada, the largest wooden building in Europe and second largest in the world.
The historic Splendid Palace Hotel (1908) in Büyükada.
