Central Library (UNAM) Central Library hosts some of the administrative offices of the General Libraries Directorate of the UNAM. In 1948 the architect and artist Juan O'Gorman, in collaboration with architects Gustavo Saavedra and Juan Martinez de Velasco designed the building with a functionalist approach, as part of the greater project of the construction of the University City on the grounds of the Pedregal de San Angel in Mexico City. Originally the building was planned to host the National Library and National Newspaper Library of Mexico. The library opened its doors for the first time on April 5, 1956. After 25 years underwent
School of Sciences, UNAM four other buildings lodging the Faculty's respective departments and their faculty. The newer part of the complex consists of two buildings, one called "Amoxcalli", which holds the Faculty's library and the Computing Center. The newest one is called "Tlahuizcalpan" which hosts various labs and research premises, as well as classrooms. In recent years, an interdisciplinary extension of the Faculty was inaugurated in the port of Sisal, Yucatán, devoted to the research of coastal ecosystems and their species. The National Herbarium of Mexico at UNAM in Mexico City houses the largest collection of plant specimens in all of Latin America and