Designed by MSA Architects, The Regnum Sky Tower is an invited competition project with an innovative and user-centered design approach. Located on a highly important and developing business district, the tower creates a brand new landmark for the city with its distinctive, eye-catching form.
The project is sited at the junction point of the important business and life axes of the city of Ankara, namely, Mevlana Boulevard, ODTU Boulevard and Çukurambar. Planned on an 8401m2 site, the tower has 51,000m² gross floor area. The 150 meters tall building features three levels of basement for parking, ground floor with a mezzanine floor for retail space and 30 levels of office space.  
Office spaces are designed not just to meet the needs of executives, but all employees with the meeting and seminar rooms, view terraces and social areas. Plus, modular gardens at office floor levels enable the open air pleasure in company with the panoramic view of Çankaya, ODTÜ forests, Eskişehir Road and Konya Road. 
Besides the architectural design approach providing functionality and multipurpose spatial solutions, Regnum Sky Tower is aimed to be an environmentally responsible building with high energy efficiency by the utilization of user friendly construction technologies and mechanical-electrical systems. 
The social-common areas are integrated with the office tower that has a graded form above the store podium. With this enriched spatial understanding, higher comfort standards are defined and a new impulse is given to the monotone work life.
The solid mass form is fragmentized with dynamism which results in answering different needs of different functions in the building since it enables diversity of functions in a single body. Thus, the balance of open-closed areas is homogeneously achieved and introduced to the users of the building.