This is the Mother Church of Rock and Roll. Say what you will about the arbitrary and sometimes moronic nature of selection; once inside you will appreciate that someone took the time and energy to collect the artifacts of a musical genre that wasn't supposed to last more than a decade. The only problem? The place is only open from 10AM to 5:30 - even on weekends. At least they recently added evening hours on Wednesday (til 9PM) -- if you're in Cleveland on business travel, that might be your only opportunity to visit. These are not very R&R-friendly hours, but if you can fit it into your schedule, the R&R Hall is worth a visit.