Kennedy Space Centre was very good! Got to see a fully operational Saturn Rocket that was built for an Apollo mission before Congress withdrew the funding. This thing was enormous. Also the 3-D Imax films were particularly impressive; one was all about the moon landings, the other about the International Space Station.
The two main disappointments were that we couldn't go inside the intruiging Vehicle Assembly Building, which in turn meant we couldn't see any actual Space Shuttles. But the good stuff made up for it, and it certainly reignited my childhood ambition to go into space. Maybe Richard Branson can help make it affordable?
I'll try and get some more photos uploaded soon, but in the meantime there are a couple of shots on my Flickr page.