What is the collective term for rock and roll halls of fame?

If I was the city of Cleveland, having poured public support - both goodwill and cash - into the building of the Rock and Roll Hall of Fame, I'd be less than delighted to discover that they've now decided to open a branch in New York, followed by others, around the globe.

Come to that, you have to wonder if there's much point in opening branches - what is a fairly broad collection of pop-related stuff in one central location might look a little thin spread out through a dozen or so sites. In fact, isn't this just going to be the Hard Rock Cafe without the overpriced burgers?

[You might enjoy No Rock's day trip to the Cleveland Hall of Fame]