There are two Apple Stores in Turkey. Both are in Istanbul. One is on the Asian side, one is on the European side.
It is the most populous city in Turkey. It is a transcontinental city, some parts of the city is in Europe, the other parts is in Asia.
The only exchange entity in Turkey, Borsa Istanbul is located here.
Since the city of Istanbul is coterminous with the Istanbul Province. Beşiktaş is a district and a municipality. It is located on the European side of the city.
Store number 1 is at Zorlu Center in Beşiktaş, İstanbul. This Apple Store here is the first one in Turkey.
Store number 2 is at Akasya in Üsküdar, İstanbul. Üsküdar is also a district and municipality of Istanbul. It is on the Asian side of the city, directly across Beşiktaş.