Şirketler Topluluğumuzun Kurucusu Sayın H. Ayduk Koray , 1950 yılında İstanbul Teknik Üniversitesi İnşaat Fakültesini bitirdikten sonra, kendi adına bir firma kurarak serbest iş hayatına atılmıştır.
Foundation of the company H. Ayduk Koray, Ankara
TUSLOG(The United States Logistics Group) Facilities construction agreement, Ankara
First public building Project: Headquarters of State Hydraulic Works, Ankara
New style in Turkish architecture: Fair face concrete facade
Completion of General Directorate Building of T. Is Bank: Koray’s firt high-rise building Project in Ankara. Use of climbing formwork and pipe supported slab formwork systems fort he first time in Turkey
Transfer of the Head Office from Ankara to Istanbul
First overseas project: Ajyad Inter-Continental Hotel in Makkah, K.Saudi Arabia
First step in the development of Levent as Istanbul’s financial business district. Yapı Kredi Plaza, Istanbul
First shopping mall in Ankara: Karum and Ankara Sheraton Hotel within the same concept
First intelligent office building: Sabancı Center, Istanbul
Entry to the Russian market: Moskova Tax Office Building
A first in organization and project management: Corporate Identity Renewal Project of Akbank Branches
Sabanci University: Turkey’s best designed and built university campus project
Our subsidiary winning 1st prize in MIPIM: Istanbul - Istanbul
The birth of a giant village complex called: Kasaba
Our subsidiary winning 1st prize in MIPIM: Istanbul - Istanbul
Entrance into Jordanian market: King’s Academy
First shopping mall in Eskisehir: NEO Shopping Center
A first in Azerbaidjan: Baku Hilton Hotel
The first LEED and BREEAM-certified educational institution: Sabancı University Nano Technology Center
The first reinforced concrete structure in Turkey in which inclined plane and angled load bearing systems are used: Kristal Kule, İstanbul
The first fully-automatic high building in Turkey in which high speed double deck elevators are used: Levent 199, İstanbul
The product of 2014 Winter Olympics: Marriott Resort Hotel
T. İş Bankası Tuzla Technology and Operation Center (TUTOM): This is a complex building that hosts approximately 5000 personnel of T. İş Bankası and its affiliates.