HOWEVER, if you have been to Kennedy Space Center, Marshall Flight Center (or the space museum in Huntsville) you might be a tad disappointed with the amount of actual space history. The tour of the facilities seemed a little...short and other than a tram ride around the building complex, and going in to see a single surplus control room, there isn't much of the office park of buildings you get to see. The space shuttle mock up used to be the one as KSC, and isn't an actual shuttle. The actual space history rooms containing objects other than the space suits, are largely confined to two galleries.
Still, if you have kids and have never been to any of the space centers, it will prove to entertain the young ones and give an overview to adults.