Tirilye is one of the most ancient towns in Bursa Province of Turkey, situated 12 km on the west of Mudanya. It is almost located on the Marmara Sea shoreline. The area, which was inhabited since 5th Century BC, was formerly known as T rho i gamma lambda epsilon iota alpha, Trigleia or B rho u lambda lambda epsilon iota ov, Brylleion in ancient Greek. Trilye has been an important religious center for Greek Orthodox Christians and is a first level protected area since 1980 because of the Byzantine and Ottoman architectural monuments. It is also considered as an openair museum with various historical buildings. Thus the site is not only an important place with its' history, but also it is one of the precious places of Turkey to have an architectural search on new forms and concepts on an existed historical area. With 20 students of the Faculty of Architecture, Department of Architecture of Yildiz Technical University, The Design Studio 4 has been searched to find the best places and related architectural concepts to create new architectural forms on Tirilye, during the spring semester of 2013-2014 educational year. Thus the paper will have the long process of the Design Studio 4, with the best 5 projects of 20 different location and concept proposal projects to Tirilye. (C) 2015 The Authors. Published by Elsevier Ltd.