The building to the left was the headquarters of the Iş Bankası or Work(ers) Bank, an important bank in the early days of the republic. From a comment below: The left one is "Business Bank" founded in 1923 by Mustafa Kemal ATATÜRK. Now it is one of the greatest banks in Turkey. The right one is "Sumer Holding" founded by ATATÜRK in order to produce cloth with good quality to poor Turkish Public at that time."Sumer Holding" produced qualified dresses for decades. When I was young we all bought these products. However, its production is stopped.