About an hour east of Orlando on the Cape Canaveral coast, the Kennedy Space Center is where every crewed US spaceflight has launched. The visitor complex covers the Saturn V that flew Apollo missions, the retired Space Shuttle Atlantis, astronaut training simulators, and bus tours that get you close to the active launch pads. Time a visit for a scheduled launch and you can watch a rocket leave the Earth.
Plan a full day. The complex sits inside a wildlife refuge, so expect alligators and birdlife alongside the hardware.