Nasa

The visitor center for NASA Johnson Space Center and the closest most kids will get to standing inside the real thing. A tram tour runs out to historic Mission Control and the astronaut training facility where hardware for current missions is actually being worked on. Independence Plaza lets you walk through a shuttle replica mounted on a genuine 747 carrier aircraft. Indoors there are moon rocks you can touch, a Saturn V rocket hall, and Apollo capsules. Book the tram early because slots fill and the queue is the one part that will test kids patience.