Once called "Harem", the building is now named as Vehbi Koç Building in Koç Holding Nakkaştepe Offices.

The Old Harem Building, that accommodates the office of Vehbi Koç, the founder of Koç Holding, today also houses the offices of the Honorary Chairman Rahmi M. Koç, Chairman of the Board of Directors Mustafa V. Koç, Vice Chairman Suna Kıraç and Temel Atay , President for Financial Services Group. Old Harem Chambers, The indoor swimming pool building, later annexed to the Harem Building complements the overall architectural style perfectly.

Click here to view the presentation movie of Harem Building.