Symphony Center is a music complex located at 220 South Michigan Avenue in the Loop area of Chicago, Illinois. Home to the Chicago Symphony Orchestra, Chicago Symphony Chorus, Civic Orchestra of Chicago, Chicago Sinfonietta, and the Institute for Learning, Access, and Training, Symphony Center includes the 2,522-seat Orchestra Hall, which dates from 1904; Buntrock Hall, a rehearsal and performance space; Grainger Ballroom, an event space overlooking Michigan Avenue and the Art Institute of Chicago; a public multi-story rotunda; tesori restaurant; and administrative offices. In June 1993, plans to significantly renovate and expand Orchestra Hall were approved and the $110 million project resulting in Symphony Center being completed from 1995 to 1997. Orchestra Hall at Symphony Center was designated a National Historic Landmark on April 19, 1994. It has been listed on the National Register of Historic Places since 1978.