San Salvador has many museums, with the largest being the  Museo Nacional de Antropología de El Salvador (MUNA) and  Museo de Arte de El Salvador (MARTE). MUNA's mission is to help Salvadorans reflect on their cultural identity through exhibitions, research, publications and educational programs in the fields of archeology and anthropology. The museum's exhibits demonstrate social processes of the various human cultural groups that have inhabited El Salvador. MARTE's mission is to contribute to development of the country's education and culture through the conservation and dissemination of its artistic heritage, and by improving historical knowledge, reaffirming cultural values that shape the Salvadoran identity, and promoting new artistic idioms. MARTE is a private, nonprofit organization, opened on 22 May 2003. Since then the museum has become an essential element of the cultural life of Central America, with its representative view of art from the mid-19th century to contemporary times.