, which was known as
Forum Tauri (later Forum of Theodosius) in the late
Roman period.
Beyazıt Tower, located within the campus, is seen in the background, to the right of the flagpole. of Istanbul University on the reverse of the 500 lira banknote (1971–1984).The university comprises seventeen faculties spread across five campuses. The main campus being on
Beyazıt Square, which was originally built by
Constantine the Great as the
Forum Tauri and was later enlarged by
Theodosius the Great as the
Forum of Theodosius during the
Roman period. Some
Roman and
Byzantine ruins are still visible on the grounds. The building stands on the site of the
Old Palace, the first palace built by the Ottoman Turks in Istanbul. Following the establishment of the Republic in 1923, the Ministry of War, like other ministries, relocated to Ankara, and the building was handed over to Darülfünun, the first and only university of the Ottoman Empire. The current main building, designed by French architect Bourgerois, was completed in 1865-1866. In 1879, it began serving as the Ottoman Empire's Ministry of War. The Blue Hall and Pink Hall, located on the building's second floor, are adorned in an
orientalist decorative style, featuring ceiling and wall ornamentations that reflect the overall aesthetic of the structure. The room currently used as the Rector's Office was originally the office of the Minister of War during the Ottoman Empire. The office also contains the desk of
Enver Pasha, who served as the Minister of War from 1914 to 1918. The "Kılıçlık Hall," which is used for academic meetings today, was originally the venue for sword-donning ceremonies for officers within the Ministry of War during the Ottoman Empire. Before holding meetings in the Kılıçlık Hall, officers would use the area on the right side of the hall to place their swords, hang their coats, and perform ablutions. The building, which was damaged in an earthquake in 1894, was restored by Italian architect
Raimondo D'Aronco. The building housing the Rare Books Library, designed by
Kemaleddin Bey in 1913, is home to a collection of approximately 93,000 volumes, including printed and manuscript books, journals, newspapers, maps, plans, and notes in
Turkish,
Arabic,
Persian,
Greek and
Latin. The collection also includes 911 albums known as the
Abdülhamid II Collection, which contain 36,585 photographs. Additionally, the library holds the collections of prominent figures in Turkish politics and intellectual history, such as Zakirbaşı Hüseyin Halis Efendi,
Hasan Rıza Pasha,
Grand Vizier İbrahim Hakkı Pasha,
Sheikh-ul-Islam Pirizade Mehmet Sahip Molla, and İbnülemin Mahmut Kemal İnal. In 1925, the collection of the
Yıldız Palace Library was transferred to the Rare Books Library. == International perspective and rankings ==