Kennedy Space Center Visitor Complex
The Saturn V hanging above the Apollo/Saturn V Center is 363 feet of actual flight hardware and it reliably silences people who walk in underneath it. The Atlantis exhibit displays the orbiter itself, tilted and payload doors open, in a room designed so you turn a corner and it is simply there. Between those two are a bus tour through the working launch complex, a shuttle launch simulator, a rocket garden and a daily astronaut encounter. Admission covers the bus tour and both main exhibit complexes, but it is a genuinely expensive day - a family of four is comfortably over $250 before parking, and anyone 12 or older pays the adult rate. Check the current promotion before buying at the gate. The walking distances are long, so plan a stroller for younger children. Launch days change access - check the schedule, because watching one is extraordinary.