The Universidad Nacional de Colombia (English: National University of Colombia), also called UNAL or just UN, is a public, national, coeducational, research university, located primarily in Bogotá, Medellín, Manizales and Palmira, Colombia. Established in 1867 by an act of the Congress of Colombia, the university is the largest and most important higher education institution of the country with more than 44,000 students, the largest number of graduated professionals per year, and number of academic programs at undergraduate and postgraduate levels, with 423 academic programs, which includes 94 graduate diplomas, 61 Academic specializations, 38 medical specialties, 131 Master's degrees, and 46 doctorates. It is also one of the few universities that employs post-doctorate fellows in the country. The university is member of the Association of Colombian Universities (ASCUN), the Iberoamerican Association of Postgraduate Universities (AUIP), and the Iberoamerican University Network Universia.