First Construction Notebooks of the Ortaköy Mosque

Ortaköy mosque is one of the buildings that stamps boğaziçi silhouette. it was built between 1848 and 1854 in the period sultan abdülmecid. the studies about the building which is also known as büyük mecidiye mosque has limited information because of not using enough archive documents. two notebooks were prepared for the first construction of the mosque, obtained from premiership ottoman archive; give us detailed information about the mosque. these notebooks are firstly used in this investigation and they give information in great detail about defines of the various regions of the mosque. one of the most important problems of architecture of the building is clarified by using details in the notebooks.