Headquarters of Demirbank was designed and constructed by KORAY. This 17,500m² building, which is one of the most prestigious buildings in Levent, Istanbul, contains eight 1,200m² basement floors that contain plant rooms, car parking areas, archive rooms, a fitness center, a cafeteria, server rooms and, a 1,100 m² entrance floor with a mezzanine level where there is the bank's branch office, 12 typical office floors with two executive floors and 2 extra floors to accomodate mechanical and electrical installations.