The university maintains international cooperation alliances with the DAAD (the German Academic Trust), the governments of Japan, France, Mexico, Spain, Taiwan (R.O.C.), the European Union, the OAS and United States research institutions such as the Organization for Tropical Studies, whose headquarters in Costa Rica are located within UCR's central campus (Rodrigo Facio campus). Other universities with ties to the University of Costa Rica are: University of Florida, State University of New York at Albany, University of Texas at Austin, University of Illinois, University of Maryland, Rutgers University and the University of Kansas, which is the oldest standing agreement between two universities in the Western Hemisphere [citation needed].