Büyükada (meaning “Big Island” in Turkısh; Greek: Πρίγκηπος or Πρίγκιπος, rendered Prinkipos or Prinkipo; and alternatively Πρίγκηψ or Πρίγκιψ meaning “Prince” or “Foremost”) is the largest of the nine so-called Princes Islands in the Sea of Marmara, near Istanbul, with an area of about 2 square miles (5 km2). It is officially a neighbourhood in the Adalar (Islands) district of ıstanbul Province, Turkey.
There are several historical buildings on Büyükada, such as the Agia Yorgi Church and Monastery dating back to the 6th century, the Agios Dimitrios Church, and the Hamidiye Mosque built.
Büyükada consists of two peaks. The one nearest to the ferry landing, İsa Tepesi (meaning Jesus Hill in Turkish), formerly Hristos (Χριστός, the Greek name for Jesus Christ), is topped by the former Greek orphanage, a huge wooden building now in decay. In the valley between the two hills sit the church and monastery of Agios Nikolaos and a former fairground called Luna Park.
Visitors can take the “small tour” of the island by a phaeton, leading to the point from where it is a strenuous climb to Agia Yorgi (St. George, in Greek Άγιος Γεώργιος), a tiny hilltop church with a magnificent panoramic view, and a café in its garden that serves wine, chips and sausage sandwiches, this being a part of the “classic” Agia Yorgi experience.