First of all, it's massive.
I mean, of course it's massive. It had to carry large things into space like satellites and whole sections of the ISS.
And it's covered in scorch marks and dents from space debris hitting it, which is terrifying and awesome.
It's a pretty good exhibit. There's lots of information on all its missions and a time-lapse video of the trek it made across town from LAX to Exposition Park (here's an abbreviated version). I spent about an hour in the hangar just checking everything out (I think I may be better alone at museums because I could spend days in them when the rest of my party has died of dehydration waiting for me to finish up.) But here's where it could improve. They could let me fly it. Or at the very least, they could let me inside of it. Is it too much to ask to sit in the captain's chair and fiddle with the instruments? While wearing space suit? And a head set so I could talk to Mission Control? I don't think it is. I would pay extra for it. Certainly more than the nothing I paid to get in.
Later I went over to the IMAX theater and watched the 3D movie on the Hubble telescope. And Sweet Land of Liberty! You have to see this movie! It is so awesome!!! I have a wacky astigmatism that makes 3D movies hard to watch but after a while I was just so mesmerized by what I was seeing that I hardly noticed my eyes wigging out.
And finally, I saw a lot of really cool things that day but these early astronaut boots were among the coolest. Double laces, zipper, and silver. Sign me up!