The University of Wisconsin–Madison (UW–Madison, Madison, or Wisconsin) is a public research university located in Madison, Wisconsin, United States. Founded in 1848, UW–Madison is the flagship campus of the University of Wisconsin System. It became a land-grant institution in 1866. The 933-acre (3.78 km) main campus includes four National Historic Landmarks. UW–Madison is organized into 20 schools which enrolled 29,153 undergraduate, 8,710 graduate, and 2,570 professional students and granted 6,040 bachelor's and 3,328 graduate and professional degrees in 2008. The university employs 2,054 faculty members. Its comprehensive academic program offers 135 undergraduate majors, along with 151 master's degree programs and 107 doctoral programs. The UW is categorized as an RU/VH Research University (very high research activity) in the Carnegie Classification of Institutions of Higher Education. In 2010, it had research expenditures of more than 1 billion dollars. In 2008, the University was ranked the third highest in the nation. Wisconsin is a founding member of the Association of American Universities.