The National Autonomous University of Mexico (Spanish: Universidad Nacional Autónoma de México, abbreviated as UNAM) was founded in 1551, making it the oldest in North America. It is the largest university in Latin America and was ranked the best in Latin America, Spain and Portugal, and 95 in the world according to a study conducted by The Times and released in 2005.
The university consists of faculties rather than departments. Both undergraduate and graduate studies are available. UNAM is also responsible for the Escuela Nacional Preparatoria (ENP) (National Preparatory School), and the Colegio de Ciencias y Humanidades (CCH), which consist of several high schools, spread around Mexico City. Counting ENP, CCH, undergraduate and graduate students, UNAM has over 269,000 students, making it one of the world's largest universities.
It has several campuses in Mexico City, as well as many others in several locations across Mexico (mainly aimed at research and graduate studies), and four foreign campuses at San Antonio (Texas, USA), Chicago (Illinois, USA) and Hull (Quebec, Canada). In addition, it is the only university in Mexico with three Nobel Laureates among its former students: Alfonso García Robles (Peace), Octavio Paz (Literature), and Mario Molina (Chemistry). There is arguably a fourth Nobel Prize awarded twice to a UNAM member: Ana María Cetto was awarded the 1995 Nobel Peace Prize as a member of the Pugwash Conferences and the 2005 Nobel Peace Prize as a member of the IAEA.