The solid state rockets and liquid fuel tank for the Atlantis Space shuttle, The picture doesn't do any justice to just how massive this is.
Off topic - Stone Ball
Instead of a boring fountain, the center had a map of the cosmos carved into a 2 ton granite sphere, suspended and slowly rotating on a water base. With enough force you could spin it a different direction!
Lightning Towers
3 lightning towers designed to direct bolts away from the launch pad that they surround.
Motor Closeup
The business end of this rocket looks more like a tangled mess of tubes and wires, but its a very advanced and complicated machine.
Saturn 5, second stage
Last November, I had the opportunity to visit the Kennedy Space Center in Florida, while visiting relatives living in the area.