Alvin Ailey American Dance Theater (AAADT) is the largest modern dance company in the United States. Based in New York City, the company was founded in 1958 by choreographer, dancer and Presidential Medal of Freedom recipient Alvin Ailey (1931–1989). The Alvin Ailey Dance Foundation, which includes AAADT, Ailey II, the Ailey School, Ailey Extension, AileyCamp, and other operations, is housed in the 87,000-square-foot (8,083 m²) Joan Weill Center for Dance, in Manhattan.