The Sousa Archives and Center for American Music holds diverse collections of music and historical instruments documenting America’s cultural heritage. The Center is home to the world’s largest collection of original compositions by John Philip Sousa, one of many significant collections portraying America’s band movement and the early evolution of electronic and avant-garde music.  The Sousa Archives offers tours of its collections to all visitors. Hours: Mon, Tu, Th, Fr 8:30 a.m.-noon and 1:00-5:00 p.m., Wed 10:00 a.m.-noon and 1:00-5:00 p.m. Closed weekends and federal holidays, but can be opened with special appointments. FREE