Go to the Rock Hall! That place is great. Plus, since you're going on June 9, you'll be able to catch the Lennon exhibit. Now, I don't know how big of a Lennon fan you are, but I'm a huge one, and loved it. At the very least, take a look at Lennon's bloodstained glasses from the night he was shot. Something like that isn't something you'll forget.
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Matt Lynch
Co-Webmaster, Kennywood Boulevard
http://kennywood.coasterbuzz.com