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. The School of Medicine is not the only one with government involvement; indeed, despite past conflicts, the Complutense University shares a close bond with the Spanish government, as both the presidential residence of La Moncloa and the Spanish Constitutional Court are located directly on-campus (with the political center of the city at walking distance).