Organization of American States
Organization of American States information
A forerunner to the UN, the OAS was founded in 1890 to promote cooperation among North and South American nations. Its main building at 17th St and Constitution Ave NW is a marble palazzo surrounded by the sculpture-studded Aztec Gardens . In the small building behind it, the OAS operates the Art Museum of the Americas , featuring a fine collection of art that spans the 20th century and the western hemisphere.