a total area of 2.64 km². The University Rectorate, swimming pool, stadium, along with most of the faculties, student residence halls and the central library of ITU are located there. Another suburban campus of ITU is the Tuzla Campus. It serves the Maritime Faculty students and faculty members. It is located in the Tuzla district of Istanbul, which is a dockyard area. The three urban campuses are near to one another and are situated close to Taksim Square. Taşkışla campus is where the Faculty of Architecture is located. The Taşkışla building is one of the most renowned historical buildings in Istanbul. It dates backs to the Ottoman era and was used as military barracks. Gümuşsuyu (Mechanical Engineering Faculty) and Maçka (Management Faculty) campuses are also among the important historical buildings of Istanbul. The Famagusta campus at Northern Cyprus is currently the first and only campus that hosts the ITU-TRNC Education and Research Campuses faculty. Library Services ITU's library roughly holds 533,000 books, 500,000 volumes of book periodicals and 6000 rare Ottoman/Latin books. ITU Library has access to international libraries and online databases. It has the largest collection on technical materials (science and engineering) in Turkey. Mustafa Inan Library named after Mustafa İnan, a former rector of the university, is the central library, the coordination center, of the library services of the Technical University. ITU Library Services' history goes back to 1795, the printing house of the Mühendishâne-i Berrî-i Hümâyun of Ottoman Empire. ITU Mustafa Inan Library's Rare Books Collection Triga Mark-2 Nuclear Reactor ITU's nuclear reactor of Triga Mark-2 is in the Maslak campus. It is located at the Energy Institute. Arı Technopolis Since the foundation in 2003 Arı Technopolis, which is located at the Ayazağa Campus, provides companies with research, technology development and production opportunities at the university, in cooperation with the researchers and academicians. The technopolis have two buildings:Arı-1 and Arı-2. Arı-3 building in Maslak and another building in Floria are announced to build. Arı Technopolis has the 49% of export among technopolises in Turkey. National High Performance Computing Center NHPCC, is located in the Ayazağa Campus. It is the national center for high performance computing. The super computer of this center was one of the world's top 500 list super computers (240th). Student Life Athletics Having a suburban campus like Maslak has created the opportunity of building many sports areas. Ayazağa Gymnasium is the center of sports