Cleveland's top attraction is like an overstuffed attic bursting with groovy finds: Jimi Hendrix's Stratocaster, Keith Moon's platform shoes, John Lennon's Sgt Pepper suit and a 1966 piece of hate mail to the Rolling Stones from a cursive-writing Fijian. It's more than memorabilia, though. Multimedia exhibits trace the history and social context of rock music and the performers who created it.
Why is the museum in Cleveland? Because this is the hometown of Alan Freed, the disk jockey who popularized the term 'rock and roll' in the early 1950s, and because the city lobbied hard and paid big. Be prepared for crowds (especially thick until 1pm or so).