Heybeliada Halki Palace, Istanbul, the largest island after Büyükada. Past sanatorium where the boat ride ons Çamlimanı'ndan composed "We have removed Halki moonlight every night" song. People of the island from once a copper mine, the name given to the copper, it resembles a saddle-bag and later took the name of Halki.

Istanbul is one of the most popular summer resorts. Only nature, clean air and beauty but, Navy, sanatorium, clergy (priest) is also famous institutions such as schools.

Width of the island, 2700 meters, 1200 meters long. 4 from the top of the Halki, Istanbul is located in the middle of the islands. Değirmentepe'dir the highest peak (136 meters). Other hills, Quarry Hill, Hope Hill and Tepesi'dir Makarios. King Hill, the former name of this hill is 85 meters high, is located on the Seminary. There are four ports on the island. Pine Harbor and the Naval Port in a beautiful cove of the most important ones.