Right off Lower Broadway is a small museum dedicated to the "Man in Black,” and it holds the largest and most comprehensive collection of Johnny Cash artifacts. Patrons crowd around costumes, instruments, personal letters, artworks, and handwritten songs. While it is packed to the gills with everything Cash, it is small, so it gets cramped during peak hours. To avoid the crowd, try to hit it right when they open and purchase your tickets in advance online so you can scan them without having to wait in the ticketing line.