Istanbul, the largest city in Turkey, was the capital of the Byzantine and Ottoman empires. The Bosphorus straits divides the city into a part that sits on the European continent, and a larger part on the continent of Asia. The militarily and economically strategic position of the city, on the western portion of the Silk Road, and on the shipping route between the Aegean and Black Seas, has kept it cosmopolitan and prosperous since its foundation 660 BCE, when it was called Byzantium. In 330 it became Constantinople, the capital of the Roman Empire, named for Emperor Constantine the Great. The Ottomans conquered the city in 1453/857 AH and renamed the city Istanbul. It served as their capital until Ankara became the capital of the modern nation of Turkey.
The architect has employed a polygonal plan to optimize the use of space for passenger circulation and the maneuvring of large aircrafts. Based on a hexagon, the building was expanded into a polygonal shape, thus increasing the number of available nose-in spots for the planes, while maintaining a concise floor plan.
The terminal building contains separate facilities on three levels. The first level is used for arriving passangers. On the second level, departure lounges are placed along the outside edges of the building, with the various shops and check-in counters in the center. Along the front of the building are additional restaurants and snack bars.