 The University has over 30 libraries, with over 2 million works in print, a particularly rich archive of over 90,000 historical documents, and one of the most extensive film collections in Europe.Due to its long history in the capital, the Complutense University enjoys great support from Madrid-based institutions, at a local, national and international level.The School of Medicine operates the Hospital Clínico Universitario de San Carlos, Hospital Gregorio Marañón, and the most famous one, Hospital 12 October, as well as a number of other specialized clinics located on-campus, some of which are operated jointly with the Ministry of Health or perform specific research for the Ministry.