Been. I was in there for 3 hours. Some very interesting stuff in there. Take your time and read everything would be my advice. The Woodstock room was a bit silly for my liking. I didn't know if the bean bags were on the floor so that we could enter into the spirit and sit on the floor like wot people used to do in the '60s, or if they were actually aimed at the ageing punters so they could take the weight off their pins for a bit. Bucky Fuller & Stewart Brand getting their dues. Didn't see much about the elusive Gary Snyder though. They did a fair job of knitting together the changing political climate with popular culture. Miserable old git that I am, I'd recommend it.
Everyone tear down your own little wall
That keeps you from being a part of it all
Because you've got to be one with the one and all
You've just got to be close to it all